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2606:4700:20::681a:6a4 Public Scan

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Submitted URL:
http://codeforces.com/contest/935/problem/A
Effective URL:
https://codeforces.com/contest/935/problem/A
Submission: On May 10 via manual (May 10th 2023, 7:46:24 pm UTC) from DE — Scanned from DE

Summary HTTP 82 Redirects Links 2 Behaviour Indicators

Summary

This website contacted 6 IPs in 3 countries across 5 domains to perform 82 HTTP transactions. The main IP is 2606:4700:20::681a:6a4, located in United States and belongs to CLOUDFLARENET, US. The main domain is codeforces.com. The Cisco Umbrella rank of the primary domain is 119804.
TLS certificate: Issued by GTS CA 1P5 on April 6th 2023. Valid for: 3 months.

This is the only time codeforces.com was scanned on urlscan.io!

urlscan.io Verdict: No classification

Domain & IP information

	IP Address	AS Autonomous System
1 1	2606:4700:20:... 2606:4700:20::ac43:44fe	13335 (CLOUDFLAR...) (CLOUDFLARENET)
1 6	2606:4700:20:... 2606:4700:20::681a:6a4	13335 (CLOUDFLAR...) (CLOUDFLARENET)
65	2a06:98c1:312... 2a06:98c1:3121::3	13335 (CLOUDFLAR...) (CLOUDFLARENET)
2	2a00:1450:400... 2a00:1450:4001:829::200a	15169 (GOOGLE) (GOOGLE)
6	195.123.220.85 195.123.220.85	21100 (ITLDC-NL) (ITLDC-NL)
2	2a00:1450:400... 2a00:1450:4001:80e::2008	15169 (GOOGLE) (GOOGLE)
2	2a00:1450:400... 2a00:1450:4001:813::2003	15169 (GOOGLE) (GOOGLE)
82	6

1 2606:4700:20::ac43:44fe (United States) 1 redirects

ASN13335 (CLOUDFLARENET, US)

codeforces.com	Domain lookup VirusTotal SecurityTrails crt.sh Censys Domaintools

6 2606:4700:20::681a:6a4 (United States) 1 redirects

ASN13335 (CLOUDFLARENET, US)

codeforces.com	Domain lookup VirusTotal SecurityTrails crt.sh Censys Domaintools

65 2a06:98c1:3121::3 (United States)

ASN13335 (CLOUDFLARENET, US)

codeforces.org	Domain lookup VirusTotal SecurityTrails crt.sh Censys Domaintools

2 2a00:1450:4001:829::200a (Frankfurt am Main, Germany)

ASN15169 (GOOGLE, US)

fonts.googleapis.com	Domain lookup VirusTotal SecurityTrails crt.sh Censys Domaintools

6 195.123.220.85 (Meppel, Netherlands)

ASN21100 (ITLDC-NL, UA)
PTR: vds-955881.hosted-by-itldc.com

cdn-mathjax.codeforces.com	Domain lookup VirusTotal SecurityTrails crt.sh Censys Domaintools

2 2a00:1450:4001:80e::2008 (Frankfurt am Main, Germany)

ASN15169 (GOOGLE, US)

ssl.google-analytics.com	Domain lookup VirusTotal SecurityTrails crt.sh Censys Domaintools

2 2a00:1450:4001:813::2003 (Frankfurt am Main, Germany)

ASN15169 (GOOGLE, US)

fonts.gstatic.com	Domain lookup VirusTotal SecurityTrails crt.sh Censys Domaintools

	Apex Domain Subdomains	Transfer
65	codeforces.org codeforces.org — Cisco Umbrella Rank: 755272	388 KB
13	codeforces.com 2 redirects codeforces.com — Cisco Umbrella Rank: 119804 cdn-mathjax.codeforces.com — Cisco Umbrella Rank: 860328	216 KB
2	gstatic.com fonts.gstatic.com	60 KB
2	google-analytics.com ssl.google-analytics.com — Cisco Umbrella Rank: 439	17 KB
2	googleapis.com fonts.googleapis.com — Cisco Umbrella Rank: 50	2 KB
82	5

	Domain	Requested by
65	codeforces.org	codeforces.com codeforces.org
7	codeforces.com	2 redirects codeforces.com
6	cdn-mathjax.codeforces.com	codeforces.com cdn-mathjax.codeforces.com
2	fonts.gstatic.com	fonts.googleapis.com
2	ssl.google-analytics.com	codeforces.com
2	fonts.googleapis.com	codeforces.com
82	6

This site contains links to these domains. Also see Links.

Domain
ton.org
ifmo.ru

Subject Issuer	Validity	Valid
*.codeforces.com GTS CA 1P5	`2023-04-06` - `2023-07-05`	3 months	crt.sh
sni.cloudflaressl.com Cloudflare Inc ECC CA-3	`2023-01-26` - `2024-01-25`	a year	crt.sh
upload.video.google.com GTS CA 1C3	`2023-04-24` - `2023-07-17`	3 months	crt.sh
*.google-analytics.com GTS CA 1C3	`2023-04-24` - `2023-07-17`	3 months	crt.sh
*.gstatic.com GTS CA 1C3	`2023-04-24` - `2023-07-17`	3 months	crt.sh

This page contains 2 frames:

Primary Page: https://codeforces.com/contest/935/problem/A
Frame ID: 6CA5387A270D9BC91D73C95C4EC61B2F
Requests: 79 HTTP requests in this frame

Frame: https://codeforces.com/cdn-cgi/challenge-platform/h/b/scripts/jsd/3ad47aec/invisible.js
Frame ID: 45088397C916F97657E5CF3BC18ADC39
Requests: 3 HTTP requests in this frame

Screenshot
Live screenshot

Full Image

Page Title

Problem - A - Codeforces

Page URL History Show full URLs

http://codeforces.com/contest/935/problem/A HTTP 301
https://codeforces.com/contest/935/problem/A Page URL

Detected technologies

MathJax (JavaScript Graphics) Expand

Overall confidence: 100%
Detected patterns

([\d.]+)?/mathjax\.js

Clipboard.js (Miscellaneous) Expand

Overall confidence: 100%
Detected patterns

clipboard(?:-([\d.]+))?(?:\.min)?\.js

Font Awesome (Font Scripts) Expand

Overall confidence: 100%
Detected patterns

<link[^>]* href=[^>]+(?:([\d.]+)/)?(?:css/)?font-awesome(?:\.min)?\.css
<link[^>]* href=[^>]*?(?:F|f)o(?:n|r)t-?(?:A|a)wesome(?:[^>]*?([0-9a-fA-F]{7,40}|[\d]+(?:.[\d]+(?:.[\d]+)?)?)|)
(?:F|f)o(?:n|r)t-?(?:A|a)wesome(?:.*?([0-9a-fA-F]{7,40}|[\d]+(?:.[\d]+(?:.[\d]+)?)?)|)

Google Analytics (Analytics) Expand

Overall confidence: 100%
Detected patterns

google-analytics\.com/(?:ga|urchin|analytics)\.js

Google Font API (Font Scripts) Expand

Overall confidence: 100%
Detected patterns

<link[^>]* href=[^>]+fonts\.(?:googleapis|google)\.com

jQuery (JavaScript Libraries) Expand

Overall confidence: 100%
Detected patterns

jquery[.-]([\d.]*\d)[^/]*\.js
jquery.*\.js(?:\?ver(?:sion)?=([\d.]+))?

Page Statistics

82
Requests

99 %
HTTPS

86 %
IPv6

5
Domains

6
Subdomains

6
IPs

3
Countries

682 kB
Transfer

1826 kB
Size

8
Cookies

2 Outgoing links

These are links going to different origins than the main page.

URL: https://ton.org/

Search URL Search Domain Scan URL

URL: http://ifmo.ru/en/

Search URL Search Domain Scan URL

Page URL History

This captures the URL locations of the websites, including HTTP redirects and client-side redirects via JavaScript or Meta fields.

http://codeforces.com/contest/935/problem/A HTTP 301
https://codeforces.com/contest/935/problem/A Page URL

Redirected requests

There were HTTP redirect chains for the following requests:

Request Chain 70

https://codeforces.com/cdn-cgi/challenge-platform/scripts/invisible.js HTTP 302
https://codeforces.com/cdn-cgi/challenge-platform/h/b/scripts/jsd/3ad47aec/invisible.js

82 HTTP transactions
0 data transactions

Method
Protocol Status Resource
Path Size
x-fer Time
Latency Type
MIME-Type IP
Location

GET
H2

200

Primary Request A Show response
codeforces.com/contest/935/problem/
Redirect Chain

http://codeforces.com/contest/935/problem/A
https://codeforces.com/contest/935/problem/A

57 KB
14 KB

270ms
235ms

Document
text/html

2606:4700:20::681a:6a4
CLOUDFLARENET

General

Check archive.org

Show headers Download Go to

Full URL

https://codeforces.com/contest/935/problem/A

Protocol

Security

TLS 1.3, , AES_128_GCM

Server

2606:4700:20::681a:6a4 , United States, ASN13335 (CLOUDFLARENET, US),

Reverse DNS

Software

cloudflare /

Resource Hash

3e2111e8b32d73cb4944f050cd0fc6ae33de342b6ef96747dbb3fb2080ec42cf

Security Headers

Name	Value
Strict-Transport-Security	max-age=86400
X-Content-Type-Options	nosniff
X-Frame-Options	sameorigin
X-Xss-Protection	1; mode=block

Request headers

Upgrade-Insecure-Requests: 1
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/113.0.5672.92 Safari/537.36
accept-language: de-DE,de;q=0.9

Response headers

cache-control: private,no-cache,no-store,max-age=0,must-revalidate
cf-cache-status: DYNAMIC
cf-ray: 7c54b00188101979-FRA
content-encoding: br
content-type: text/html;charset=UTF-8
date: Wed, 10 May 2023 19:46:18 GMT
expires: -1
nel: {"success_fraction":0,"report_to":"cf-nel","max_age":604800}
pragma: no-cache
report-to: {"endpoints":[{"url":"https:\/\/a.nel.cloudflare.com\/report\/v3?s=w8HUjfyxO4AnNLSp49CahfzMNsnEbYM1N3v5x4n02TgP1JW9qbDnC6aGyUrMqLhGeOdcE4fDkx1vBRgX70x8hU%2B5yWxo4dLStXdsFHtX9kxZSi0IoOZuq622OyIVbzjiAxwJ812B7MdjK1bk"}],"group":"cf-nel","max_age":604800}
server: cloudflare
strict-transport-security: max-age=86400
vary: Accept-Encoding accept-encoding
x-content-type-options: nosniff
x-frame-options: sameorigin
x-xss-protection: 1; mode=block

Redirect headers

CF-RAY: 7c54b0012ea53619-FRA
Cache-Control: max-age=3600
Connection: keep-alive
Date: Wed, 10 May 2023 19:46:18 GMT
Expires: Wed, 10 May 2023 20:46:18 GMT
Location: https://codeforces.com/contest/935/problem/A
NEL: {"success_fraction":0,"report_to":"cf-nel","max_age":604800}
Report-To: {"endpoints":[{"url":"https:\/\/a.nel.cloudflare.com\/report\/v3?s=dZuU4jApz7ZfcZQ%2Fik8Zl6D8HorBttSTTcFwJUii19DnZSRNo8wKs20n3H67JsxcQ2mzyhyXoW0b%2FG7f4%2Fy%2FASvrm5BYhW5Iyj5mEfOUjup0QYUkb%2BB5lCCfC3Vq7N5srvJMOBmvIgR7zDAh"}],"group":"cf-nel","max_age":604800}
Server: cloudflare
Transfer-Encoding: chunked
Vary: Accept-Encoding

GET
H2 200 jquery-1.8.3.js Show response
codeforces.org/s/0/js/ 142 KB
43 KB 134ms
64ms Script
application/javascript 2a06:98c1:3121::3
CLOUDFLARENET

General

Check archive.org

Show headers Download Go to

Full URL: https://codeforces.org/s/0/js/jquery-1.8.3.js
Requested by: Host: codeforces.com
URL: https://codeforces.com/contest/935/problem/A
Protocol: H2
Security: TLS 1.3, , AES_128_GCM
Server: 2a06:98c1:3121::3 , United States, ASN13335 (CLOUDFLARENET, US),
Reverse DNS
Software: cloudflare /
Resource Hash: a744f91b869addd9de6be96c80a56b77cbd3c4210dbb9d24ccfcfa8d0c56dbb4

Request headers

accept-language: de-DE,de;q=0.9
Referer: https://codeforces.com/
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/113.0.5672.92 Safari/537.36

Response headers

date: Wed, 10 May 2023 19:46:18 GMT
content-encoding: br
cf-cache-status: HIT
nel: {"success_fraction":0,"report_to":"cf-nel","max_age":604800}
age: 170908
cf-polished: origSize=267739
alt-svc: h3=":443"; ma=86400, h3-29=":443"; ma=86400
pragma: public
cf-bgj: minify
last-modified: Mon, 03 Apr 2023 20:10:53 GMT
server: cloudflare
etag: W/"642b32cd-415db"
vary: Accept-Encoding
report-to: {"endpoints":[{"url":"https:\/\/a.nel.cloudflare.com\/report\/v3?s=zW1vdPPRy0hwKlIz9a3pK%2BZAjSng2piM3sygIhD1BX6em%2FzR2Q6vJcb6h5EPnmvafTTeNrOTPOm%2Byha%2BruVs3R4Lfbd6zawMIrtdZWjcjhqtGOgHZoAzaT9olfDqm4O8sPoTR%2Bq2gciUolH0hg%3D%3D"}],"group":"cf-nel","max_age":604800}
content-type: application/javascript
access-control-allow-origin: *
cache-control: public, max-age=604800
cf-ray: 7c54b0039c07bb55-FRA
expires: Mon, 15 May 2023 20:17:50 GMT

GET
H2 200 font-awesome.min.css
codeforces.org/s/34619/css/ 27 KB
6 KB 89ms
20ms Stylesheet
text/css 2a06:98c1:3121::3
CLOUDFLARENET

General

Check archive.org

Show headers Download Go to

Full URL: https://codeforces.org/s/34619/css/font-awesome.min.css
Requested by: Host: codeforces.com
URL: https://codeforces.com/contest/935/problem/A
Protocol: H2
Security: TLS 1.3, , AES_128_GCM
Server: 2a06:98c1:3121::3 , United States, ASN13335 (CLOUDFLARENET, US),
Reverse DNS
Software: cloudflare /
Resource Hash: 16479dc1f894106be7221252a139a7e8e14a830ad029ef30183e7af7b751e2b3

Request headers

accept-language: de-DE,de;q=0.9
Referer: https://codeforces.com/
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/113.0.5672.92 Safari/537.36

Response headers

date: Wed, 10 May 2023 19:46:18 GMT
content-encoding: br
cf-cache-status: HIT
nel: {"success_fraction":0,"report_to":"cf-nel","max_age":604800}
age: 45314
alt-svc: h3=":443"; ma=86400, h3-29=":443"; ma=86400
pragma: public
last-modified: Mon, 03 Apr 2023 20:10:52 GMT
server: cloudflare
etag: W/"642b32cc-6a5b"
vary: Accept-Encoding
report-to: {"endpoints":[{"url":"https:\/\/a.nel.cloudflare.com\/report\/v3?s=VVWZyh5f3V7eiZd%2FBvE%2FQhjiD4%2B0srYNw5I2P8wpcrWXaV%2FgsqJd2gynFe1BzoF%2Fs4wS%2B3FXsOtuS3ERNR4MgDz%2Bu1hf1mc1bJejgd%2FRyN3XLTT0Gjze1plu49%2Bf0l3fMtybvNytauxXDIK9uA%3D%3D"}],"group":"cf-nel","max_age":604800}
content-type: text/css
access-control-allow-origin: *
cache-control: public, max-age=604800
cf-ray: 7c54b0038bc3bb55-FRA
expires: Wed, 17 May 2023 07:11:04 GMT

GET
H2 200 line-awesome.min.css
codeforces.org/s/34619/css/ 88 KB
16 KB 97ms
28ms Stylesheet
text/css 2a06:98c1:3121::3
CLOUDFLARENET

General

Check archive.org

Show headers Download Go to

Full URL: https://codeforces.org/s/34619/css/line-awesome.min.css
Requested by: Host: codeforces.com
URL: https://codeforces.com/contest/935/problem/A
Protocol: H2
Security: TLS 1.3, , AES_128_GCM
Server: 2a06:98c1:3121::3 , United States, ASN13335 (CLOUDFLARENET, US),
Reverse DNS
Software: cloudflare /
Resource Hash: ce61a18cf084f15003798340044643f329ac5f90045acb2d9e778368bd799854

Request headers

accept-language: de-DE,de;q=0.9
Referer: https://codeforces.com/
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/113.0.5672.92 Safari/537.36

Response headers

date: Wed, 10 May 2023 19:46:18 GMT
content-encoding: br
cf-cache-status: HIT
nel: {"success_fraction":0,"report_to":"cf-nel","max_age":604800}
age: 45314
alt-svc: h3=":443"; ma=86400, h3-29=":443"; ma=86400
pragma: public
last-modified: Mon, 03 Apr 2023 20:10:52 GMT
server: cloudflare
etag: W/"642b32cc-15e81"
vary: Accept-Encoding
report-to: {"endpoints":[{"url":"https:\/\/a.nel.cloudflare.com\/report\/v3?s=YGeRNBNJ9YEaVEpryvOrUyftJmHFE78FJ1fjzb8Tmb7%2FOVYi%2B9pB2mGAVMP4LKmVqmFXTgS8lRR8WTKZRIMzQ%2FKRpqVx%2Faq%2FhHQQXtj0Qo6geGunSx13suxQ5fPtXykA4%2BgXjtgfwyMvUEcCpg%3D%3D"}],"group":"cf-nel","max_age":604800}
content-type: text/css
access-control-allow-origin: *
cache-control: public, max-age=604800
cf-ray: 7c54b0038bc4bb55-FRA
expires: Wed, 17 May 2023 07:11:04 GMT

GET
H2 200 css
fonts.googleapis.com/ 3 KB
956 B 181ms
42ms Stylesheet
text/css 2a00:1450:4001:829::200a
GOOGLE

General

Check archive.org

Show headers Download Go to

Full URL

https://fonts.googleapis.com/css?family=PT+Sans+Narrow:400,700&subset=latin,cyrillic

Requested by

Host: codeforces.com
URL: https://codeforces.com/contest/935/problem/A

Protocol

Security

TLS 1.3, , AES_128_GCM

Server

2a00:1450:4001:829::200a Frankfurt am Main, Germany, ASN15169 (GOOGLE, US),

Reverse DNS

Software

ESF /

Resource Hash

20cf5af02b0e3f504a7da0f66c3b0122210c0430d44c24b02d66b903b31279f0

Security Headers

Name	Value
Strict-Transport-Security	max-age=31536000
X-Content-Type-Options	nosniff
X-Frame-Options	SAMEORIGIN
X-Xss-Protection	0

Request headers

accept-language: de-DE,de;q=0.9
Referer: https://codeforces.com/
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/113.0.5672.92 Safari/537.36

Response headers

strict-transport-security: max-age=31536000
date: Wed, 10 May 2023 19:46:18 GMT
content-encoding: gzip
x-content-type-options: nosniff
cross-origin-resource-policy: cross-origin
alt-svc: h3=":443"; ma=2592000,h3-29=":443"; ma=2592000
x-xss-protection: 0
last-modified: Wed, 10 May 2023 19:31:59 GMT
server: ESF
cross-origin-opener-policy: same-origin-allow-popups
x-frame-options: SAMEORIGIN
content-type: text/css; charset=utf-8
access-control-allow-origin: *
cache-control: private, max-age=86400, stale-while-revalidate=604800
timing-allow-origin: *
link: <https://fonts.gstatic.com>; rel=preconnect; crossorigin
expires: Wed, 10 May 2023 19:46:18 GMT

GET
H2 200 css
fonts.googleapis.com/ 2 KB
628 B 184ms
46ms Stylesheet
text/css 2a00:1450:4001:829::200a
GOOGLE

General

Check archive.org

Show headers Download Go to

Full URL

https://fonts.googleapis.com/css?family=Cuprum&subset=latin,cyrillic

Requested by

Host: codeforces.com
URL: https://codeforces.com/contest/935/problem/A

Protocol

Security

TLS 1.3, , AES_128_GCM

Server

2a00:1450:4001:829::200a Frankfurt am Main, Germany, ASN15169 (GOOGLE, US),

Reverse DNS

Software

ESF /

Resource Hash

6722b4e5871d7e30c08a277282f5186a0c98ab32083f341577ccfae4bc01efcd

Security Headers

Name	Value
Strict-Transport-Security	max-age=31536000
X-Content-Type-Options	nosniff
X-Frame-Options	SAMEORIGIN
X-Xss-Protection	0

Request headers

accept-language: de-DE,de;q=0.9
Referer: https://codeforces.com/
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/113.0.5672.92 Safari/537.36

Response headers

strict-transport-security: max-age=31536000
date: Wed, 10 May 2023 19:46:18 GMT
content-encoding: gzip
x-content-type-options: nosniff
cross-origin-resource-policy: cross-origin
alt-svc: h3=":443"; ma=2592000,h3-29=":443"; ma=2592000
x-xss-protection: 0
last-modified: Wed, 10 May 2023 19:13:33 GMT
server: ESF
cross-origin-opener-policy: same-origin-allow-popups
x-frame-options: SAMEORIGIN
content-type: text/css; charset=utf-8
access-control-allow-origin: *
cache-control: private, max-age=86400, stale-while-revalidate=604800
timing-allow-origin: *
link: <https://fonts.gstatic.com>; rel=preconnect; crossorigin
expires: Wed, 10 May 2023 19:46:18 GMT

GET
H2 200 prettify.css
codeforces.org/s/34619/css/ 2 KB
673 B 90ms
21ms Stylesheet
text/css 2a06:98c1:3121::3
CLOUDFLARENET

General

Check archive.org

Show headers Download Go to

Full URL: https://codeforces.org/s/34619/css/prettify.css
Requested by: Host: codeforces.com
URL: https://codeforces.com/contest/935/problem/A
Protocol: H2
Security: TLS 1.3, , AES_128_GCM
Server: 2a06:98c1:3121::3 , United States, ASN13335 (CLOUDFLARENET, US),
Reverse DNS
Software: cloudflare /
Resource Hash: 36a8b7e4af67f1229891cad4d00155d6fb2172768aabecf84ebc5c403523cb76

Request headers

accept-language: de-DE,de;q=0.9
Referer: https://codeforces.com/
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/113.0.5672.92 Safari/537.36

Response headers

date: Wed, 10 May 2023 19:46:18 GMT
content-encoding: br
cf-cache-status: HIT
nel: {"success_fraction":0,"report_to":"cf-nel","max_age":604800}
age: 45314
cf-polished: origSize=3571
alt-svc: h3=":443"; ma=86400, h3-29=":443"; ma=86400
pragma: public
cf-bgj: minify
last-modified: Mon, 03 Apr 2023 20:10:52 GMT
server: cloudflare
etag: W/"642b32cc-df3"
vary: Accept-Encoding
report-to: {"endpoints":[{"url":"https:\/\/a.nel.cloudflare.com\/report\/v3?s=4hVZDYyFevC8gBXR%2BAHIx9dIeG%2FKIQ9jIBaMj9KNwaKae26o5vXQRPM160yzN8XdNrAQpNsJ9CQiklUY8XSsitabBZVx%2BqoFDyynQcx0FspLoizD2HgN4zBJeFj5ZuCFt3ZSd5RyazyMBqQ1iQ%3D%3D"}],"group":"cf-nel","max_age":604800}
content-type: text/css
access-control-allow-origin: *
cache-control: public, max-age=604800
cf-ray: 7c54b0038bc8bb55-FRA
expires: Wed, 17 May 2023 07:11:04 GMT

GET
H2 200 clear.css
codeforces.org/s/34619/css/ 924 B
1 KB 85ms
17ms Stylesheet
text/css 2a06:98c1:3121::3
CLOUDFLARENET

General

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Full URL: https://codeforces.org/s/34619/css/clear.css
Requested by: Host: codeforces.com
URL: https://codeforces.com/contest/935/problem/A
Protocol: H2
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Software: cloudflare /
Resource Hash: 69f4bf2788a05fd1807be7affa25fb7636aeb5e2f73b8627ccaecdb3266a332d

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Referer: https://codeforces.com/
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/113.0.5672.92 Safari/537.36

Response headers

date: Wed, 10 May 2023 19:46:18 GMT
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expires: Wed, 17 May 2023 07:11:04 GMT

GET
H2 200 style.css
codeforces.org/s/34619/css/ 11 KB
3 KB 91ms
22ms Stylesheet
text/css 2a06:98c1:3121::3
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Full URL: https://codeforces.org/s/34619/css/style.css
Requested by: Host: codeforces.com
URL: https://codeforces.com/contest/935/problem/A
Protocol: H2
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Software: cloudflare /
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Request headers

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User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/113.0.5672.92 Safari/537.36

Response headers

date: Wed, 10 May 2023 19:46:18 GMT
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GET
H2 200 ttypography.css
codeforces.org/s/34619/css/ 5 KB
2 KB 131ms
63ms Stylesheet
text/css 2a06:98c1:3121::3
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Full URL: https://codeforces.org/s/34619/css/ttypography.css
Requested by: Host: codeforces.com
URL: https://codeforces.com/contest/935/problem/A
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Request headers

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User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/113.0.5672.92 Safari/537.36

Response headers

date: Wed, 10 May 2023 19:46:18 GMT
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cf-cache-status: HIT
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server: cloudflare
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cf-ray: 7c54b0038bd1bb55-FRA
expires: Wed, 17 May 2023 07:11:04 GMT

GET
H2 200 problem-statement.css
codeforces.org/s/34619/css/ 7 KB
2 KB 104ms
36ms Stylesheet
text/css 2a06:98c1:3121::3
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Full URL: https://codeforces.org/s/34619/css/problem-statement.css
Requested by: Host: codeforces.com
URL: https://codeforces.com/contest/935/problem/A
Protocol: H2
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Software: cloudflare /
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Request headers

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User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/113.0.5672.92 Safari/537.36

Response headers

date: Wed, 10 May 2023 19:46:18 GMT
content-encoding: br
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server: cloudflare
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cf-ray: 7c54b0038bd7bb55-FRA
expires: Wed, 17 May 2023 07:11:04 GMT

GET
H2 200 second-level-menu.css
codeforces.org/s/34619/css/ 820 B
640 B 122ms
54ms Stylesheet
text/css 2a06:98c1:3121::3
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Full URL: https://codeforces.org/s/34619/css/second-level-menu.css
Requested by: Host: codeforces.com
URL: https://codeforces.com/contest/935/problem/A
Protocol: H2
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Request headers

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User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/113.0.5672.92 Safari/537.36

Response headers

date: Wed, 10 May 2023 19:46:18 GMT
content-encoding: br
cf-cache-status: HIT
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server: cloudflare
etag: W/"642b32cc-50c"
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cache-control: public, max-age=604800
cf-ray: 7c54b0038bd6bb55-FRA
expires: Wed, 17 May 2023 07:11:04 GMT

GET
H2 200 roundbox.css
codeforces.org/s/34619/css/ 1 KB
1002 B 95ms
28ms Stylesheet
text/css 2a06:98c1:3121::3
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Full URL: https://codeforces.org/s/34619/css/roundbox.css
Requested by: Host: codeforces.com
URL: https://codeforces.com/contest/935/problem/A
Protocol: H2
Security: TLS 1.3, , AES_128_GCM
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Software: cloudflare /
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Request headers

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User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/113.0.5672.92 Safari/537.36

Response headers

date: Wed, 10 May 2023 19:46:18 GMT
content-encoding: br
cf-cache-status: HIT
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server: cloudflare
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cf-ray: 7c54b0038bd5bb55-FRA
expires: Wed, 17 May 2023 07:11:04 GMT

GET
H2 200 datatable.css
codeforces.org/s/34619/css/ 2 KB
748 B 143ms
76ms Stylesheet
text/css 2a06:98c1:3121::3
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Full URL: https://codeforces.org/s/34619/css/datatable.css
Requested by: Host: codeforces.com
URL: https://codeforces.com/contest/935/problem/A
Protocol: H2
Security: TLS 1.3, , AES_128_GCM
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Software: cloudflare /
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Request headers

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User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/113.0.5672.92 Safari/537.36

Response headers

date: Wed, 10 May 2023 19:46:18 GMT
content-encoding: br
cf-cache-status: HIT
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cache-control: public, max-age=604800
cf-ray: 7c54b0038bcebb55-FRA
expires: Wed, 17 May 2023 07:11:04 GMT

GET
H2 200 table-form.css
codeforces.org/s/34619/css/ 571 B
589 B 117ms
50ms Stylesheet
text/css 2a06:98c1:3121::3
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Full URL: https://codeforces.org/s/34619/css/table-form.css
Requested by: Host: codeforces.com
URL: https://codeforces.com/contest/935/problem/A
Protocol: H2
Security: TLS 1.3, , AES_128_GCM
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Software: cloudflare /
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Request headers

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User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/113.0.5672.92 Safari/537.36

Response headers

date: Wed, 10 May 2023 19:46:18 GMT
content-encoding: br
cf-cache-status: HIT
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cache-control: public, max-age=604800
cf-ray: 7c54b0038bcfbb55-FRA
expires: Wed, 17 May 2023 07:11:04 GMT

GET
H2 200 topic.css
codeforces.org/s/34619/css/ 2 KB
889 B 88ms
21ms Stylesheet
text/css 2a06:98c1:3121::3
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Full URL: https://codeforces.org/s/34619/css/topic.css
Requested by: Host: codeforces.com
URL: https://codeforces.com/contest/935/problem/A
Protocol: H2
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Request headers

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User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/113.0.5672.92 Safari/537.36

Response headers

date: Wed, 10 May 2023 19:46:18 GMT
content-encoding: br
cf-cache-status: HIT
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cf-ray: 7c54b0038bccbb55-FRA
expires: Wed, 17 May 2023 07:11:04 GMT

GET
H2 200 jquery.jgrowl.css
codeforces.org/s/34619/css/ 3 KB
886 B 97ms
30ms Stylesheet
text/css 2a06:98c1:3121::3
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Full URL: https://codeforces.org/s/34619/css/jquery.jgrowl.css
Requested by: Host: codeforces.com
URL: https://codeforces.com/contest/935/problem/A
Protocol: H2
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Request headers

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User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/113.0.5672.92 Safari/537.36

Response headers

date: Wed, 10 May 2023 19:46:18 GMT
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cf-cache-status: HIT
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cache-control: public, max-age=604800
cf-ray: 7c54b0038bd3bb55-FRA
expires: Wed, 17 May 2023 07:11:04 GMT

GET
H2 200 facebox.css
codeforces.org/s/34619/css/ 965 B
670 B 89ms
22ms Stylesheet
text/css 2a06:98c1:3121::3
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Full URL: https://codeforces.org/s/34619/css/facebox.css
Requested by: Host: codeforces.com
URL: https://codeforces.com/contest/935/problem/A
Protocol: H2
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Request headers

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User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/113.0.5672.92 Safari/537.36

Response headers

date: Wed, 10 May 2023 19:46:18 GMT
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server: cloudflare
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Response headers

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GET
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codeforces.org/s/90932/images/icons/ 136 B
673 B 29ms
28ms Image
image/png 2a06:98c1:3121::3
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Response headers

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GET
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codeforces.org/s/34619/images/ 2 KB
3 KB 30ms
29ms Image
image/png 2a06:98c1:3121::3
CLOUDFLARENET

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Full URL: https://codeforces.org/s/34619/images/ton-100x100.png
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codeforces.org/s/34619/images/ 5 KB
5 KB 23ms
22ms Image
image/png 2a06:98c1:3121::3
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Full URL: https://codeforces.org/s/34619/images/itmo_small_en-logo.png
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Response headers

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codeforces.org/s/34619/images/icons/ 396 B
930 B 26ms
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image/png 2a06:98c1:3121::3
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Full URL: https://codeforces.org/s/34619/images/icons/control.png
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image/png 2a06:98c1:3121::3
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Full URL: https://codeforces.org/s/34619/images/icons/control-270.png
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Response headers

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GET
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ssl.google-analytics.com/ 45 KB
17 KB 154ms
38ms Script
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GOOGLE

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https://ssl.google-analytics.com/ga.js

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Host: codeforces.com
URL: https://codeforces.com/contest/935/problem/A

Protocol

Security

TLS 1.3, , AES_128_GCM

Server

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codeforces.org/s/34619/images/ 845 B
1 KB 23ms
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image/png 2a06:98c1:3121::3
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Full URL: https://codeforces.org/s/34619/images/search-16x16.png
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Response headers

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codeforces.org/s/34619/fonts/ 94 KB
95 KB 54ms
37ms Font
font/woff2 2a06:98c1:3121::3
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Full URL: https://codeforces.org/s/34619/fonts/la-solid-900.woff2
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https://codeforces.com/cdn-cgi/challenge-platform/h/b/scripts/jsd/3ad47aec/invisible.js

Requested by

Host: codeforces.com
URL: https://codeforces.com/contest/935/problem/A

Protocol

Server

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Reverse DNS

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Resource Hash

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Security Headers

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Request headers

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Referer
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Response headers

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Redirect headers

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93 KB 25ms
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application/javascript 195.123.220.85
ITLDC-NL

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Full URL: https://cdn-mathjax.codeforces.com/config/TeX-AMS_HTML-full.js?V=2.7.9
Requested by: Host: cdn-mathjax.codeforces.com
URL: https://cdn-mathjax.codeforces.com/MathJax.js?config=TeX-AMS_HTML-full
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Request headers

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Response headers

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content-encoding: gzip
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server: nginx/1.18.0 (Ubuntu)
etag: W/"6065d767-4d31d"
vary: Accept-Encoding
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GET
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197 B 57ms
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image/gif 2a00:1450:4001:80e::2008
GOOGLE

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Requested by

Host: codeforces.com
URL: https://codeforces.com/contest/935/problem/A

Protocol

Security

TLS 1.3, , AES_128_GCM

Server

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Reverse DNS

Software

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Resource Hash

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Security Headers

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Request headers

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Response headers

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server: Golfe2
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CLOUDFLARENET

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Full URL: https://codeforces.org/s/34619/images/menu/lava-right.png
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Request headers

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Response headers

date: Wed, 10 May 2023 19:46:19 GMT
cf-cache-status: HIT
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age: 45200
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677 B 35ms
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image/png 2a06:98c1:3121::3
CLOUDFLARENET

General

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Full URL: https://codeforces.org/s/34619/images/menu/lava-left.png
Requested by: Host: codeforces.org
URL: https://codeforces.org/s/34619/css/second-level-menu.css
Protocol: H3
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Reverse DNS
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Request headers

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Response headers

date: Wed, 10 May 2023 19:46:19 GMT
cf-cache-status: HIT
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age: 45201
alt-svc: h3=":443"; ma=86400, h3-29=":443"; ma=86400
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cf-ray: 7c54b00679a13a80-FRA
expires: Wed, 17 May 2023 07:12:58 GMT

GET
H2 200 fontdata.js Show response
cdn-mathjax.codeforces.com/jax/output/HTML-CSS/fonts/TeX/ 43 KB
14 KB 28ms
27ms Script
application/javascript 195.123.220.85
ITLDC-NL

General

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Full URL: https://cdn-mathjax.codeforces.com/jax/output/HTML-CSS/fonts/TeX/fontdata.js?V=2.7.9
Requested by: Host: cdn-mathjax.codeforces.com
URL: https://cdn-mathjax.codeforces.com/MathJax.js?config=TeX-AMS_HTML-full
Protocol: H2
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Request headers

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Response headers

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content-encoding: gzip
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server: nginx/1.18.0 (Ubuntu)
etag: W/"6065da54-ad3d"
vary: Accept-Encoding
content-type: application/javascript
access-control-allow-origin: *
cache-control: max-age=172800, public
expires: Fri, 12 May 2023 19:46:19 GMT

GET
H2 200 pica.js
codeforces.com/cdn-cgi/challenge-platform/h/b/scripts/ Frame 4508 5 KB
3 KB 30ms
30ms Other
application/javascript 2606:4700:20::681a:6a4
CLOUDFLARENET

General

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Full URL

https://codeforces.com/cdn-cgi/challenge-platform/h/b/scripts/pica.js

Requested by

Host: codeforces.com
URL: https://codeforces.com/contest/935/problem/A

Protocol

Security

TLS 1.3, , AES_128_GCM

Server

2606:4700:20::681a:6a4 , United States, ASN13335 (CLOUDFLARENET, US),

Reverse DNS

Software

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Resource Hash

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Security Headers

Name	Value
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Request headers

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Referer
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Response headers

date: Wed, 10 May 2023 19:46:19 GMT
content-encoding: br
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content-type: application/javascript; charset=UTF-8
cache-control: max-age=14400, public
cf-ray: 7c54b006da321979-FRA

GET
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cdn-mathjax.codeforces.com/fonts/HTML-CSS/TeX/woff/ 33 KB
34 KB 61ms
19ms Font
font/woff 195.123.220.85
ITLDC-NL

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Full URL: https://cdn-mathjax.codeforces.com/fonts/HTML-CSS/TeX/woff/MathJax_Main-Regular.woff?V=2.7.9
Protocol: H2
Security: TLS 1.2, ECDHE_RSA, CHACHA20_POLY1305
Server: 195.123.220.85 Meppel, Netherlands, ASN21100 (ITLDC-NL, UA),
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Software: nginx/1.18.0 (Ubuntu) /
Resource Hash: 55c77dfef369aee9bf4058c15f01b7d8c245177cd0e2a6ecb1d1ae71a7443d6f

Request headers

Referer: https://codeforces.com/
Origin: https://codeforces.com
accept-language: de-DE,de;q=0.9
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/113.0.5672.92 Safari/537.36

Response headers

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last-modified: Thu, 01 Apr 2021 14:23:39 GMT
server: nginx/1.18.0 (Ubuntu)
etag: "6065d76b-8574"
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access-control-allow-origin: *
cache-control: max-age=172800, public
accept-ranges: bytes
content-length: 34164
expires: Fri, 12 May 2023 19:46:19 GMT

GET
H2 200 MathJax_Math-Italic.woff
cdn-mathjax.codeforces.com/fonts/HTML-CSS/TeX/woff/ 19 KB
19 KB 108ms
70ms Font
font/woff 195.123.220.85
ITLDC-NL

General

Check archive.org

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Full URL: https://cdn-mathjax.codeforces.com/fonts/HTML-CSS/TeX/woff/MathJax_Math-Italic.woff?V=2.7.9
Protocol: H2
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Software: nginx/1.18.0 (Ubuntu) /
Resource Hash: 8db815a915b38f569e5c06686cae5489a9a396607915fdc21eeb052e61d6c27c

Request headers

Referer: https://codeforces.com/
Origin: https://codeforces.com
accept-language: de-DE,de;q=0.9
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/113.0.5672.92 Safari/537.36

Response headers

pragma: public
date: Wed, 10 May 2023 19:46:19 GMT
last-modified: Thu, 01 Apr 2021 14:23:39 GMT
server: nginx/1.18.0 (Ubuntu)
etag: "6065d76b-4b9c"
content-type: font/woff
access-control-allow-origin: *
cache-control: max-age=172800, public
accept-ranges: bytes
content-length: 19356
expires: Fri, 12 May 2023 19:46:19 GMT

GET
H2 200 MathJax_Size1-Regular.woff
cdn-mathjax.codeforces.com/fonts/HTML-CSS/TeX/woff/ 6 KB
6 KB 95ms
58ms Font
font/woff 195.123.220.85
ITLDC-NL

General

Check archive.org

Show headers Download Go to

Full URL: https://cdn-mathjax.codeforces.com/fonts/HTML-CSS/TeX/woff/MathJax_Size1-Regular.woff?V=2.7.9
Protocol: H2
Security: TLS 1.2, ECDHE_RSA, CHACHA20_POLY1305
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Reverse DNS: vds-955881.hosted-by-itldc.com
Software: nginx/1.18.0 (Ubuntu) /
Resource Hash: 2cf985fbe70694eda52314ccab5a052a177691e05d90c0be44d05e57da22d001

Request headers

Referer: https://codeforces.com/
Origin: https://codeforces.com
accept-language: de-DE,de;q=0.9
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/113.0.5672.92 Safari/537.36

Response headers

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last-modified: Thu, 01 Apr 2021 14:23:39 GMT
server: nginx/1.18.0 (Ubuntu)
etag: "6065d76b-16a0"
content-type: font/woff
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cache-control: max-age=172800, public
accept-ranges: bytes
content-length: 5792
expires: Fri, 12 May 2023 19:46:19 GMT

POST
H2 200 7c54b00188101979 Show response
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513 B 46ms
45ms XHR
text/plain 2606:4700:20::681a:6a4
CLOUDFLARENET

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Full URL: https://codeforces.com/cdn-cgi/challenge-platform/h/b/cv/result/7c54b00188101979
Requested by: Host: codeforces.com
URL: https://codeforces.com/cdn-cgi/challenge-platform/scripts/invisible.js
Protocol: H2
Security: TLS 1.3, , AES_128_GCM
Server: 2606:4700:20::681a:6a4 , United States, ASN13335 (CLOUDFLARENET, US),
Reverse DNS
Software: cloudflare /
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Request headers

Referer
accept-language: de-DE,de;q=0.9
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/113.0.5672.92 Safari/537.36
Content-Type: application/json

Response headers

date: Wed, 10 May 2023 19:46:19 GMT
content-encoding: br
nel: {"success_fraction":0,"report_to":"cf-nel","max_age":604800}
server: cloudflare
cf-ray: 7c54b0095d8d1979-FRA
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content-type: text/plain; charset=UTF-8

Verdicts & Comments Add Verdict or Comment

56 JavaScript Global Variables

These are the non-standard "global" variables defined on the window object. These can be helpful in identifying possible client-side frameworks and code.

8 Cookies

Cookies are little pieces of information stored in the browser of a user. Whenever a user visits the site again, he will also send his cookie values, thus allowing the website to re-identify him even if he changed locations. This is how permanent logins work.

Domain/Path	Expires	Name / Value
codeforces.com/	1969-12-31 23:59:59	Name: JSESSIONID Value: AEBEB6A101E4D96041603E56273E2ED7-n1
codeforces.com/	1970-01-20 11:59:07	Name: 39ce7 Value: CFN4e20y
.codeforces.com/	1970-01-20 21:18:27	Name: __utma Value: 71512449.1699769180.1683747979.1683747979.1683747979.1
.codeforces.com/	1969-12-31 23:59:59	Name: __utmc Value: 71512449
.codeforces.com/	1970-01-20 16:05:15	Name: __utmz Value: 71512449.1683747979.1.1.utmcsr=(direct)\|utmccn=(direct)\|utmcmd=(none)
.codeforces.com/	1970-01-20 11:42:28	Name: __utmt Value: 1
.codeforces.com/	1970-01-20 11:42:29	Name: __utmb Value: 71512449.1.10.1683747979
.codeforces.com/	1970-01-20 11:42:29	Name: __cf_bm Value: APeWaa45IQWXZC1tF3O2CA__xC3CPA.rfbc1h_nGrsU-1683747979-0-AekPEdCXGxrcCeKmWjHuM48LOcrK/Q9ElUw/yRXSnNNkVIK6sigRt2kZZ/cGQnLjPR7qFa9jxl11Kx++GsJm6gd2wkG5+En4hyZSiG8XcdJE

Security Headers

This page lists any security headers set by the main page. If you want to understand what these mean and how to use them, head on over to this page

Header	Value
Strict-Transport-Security	max-age=86400
X-Content-Type-Options	nosniff
X-Frame-Options	sameorigin
X-Xss-Protection	1; mode=block

Indicators

This is a term in the security industry to describe indicators such as IPs, Domains, Hashes, etc. This does not imply that any of these indicate malicious activity.

cdn-mathjax.codeforces.com
codeforces.com
codeforces.org
fonts.googleapis.com
fonts.gstatic.com
ssl.google-analytics.com
195.123.220.85
2606:4700:20::681a:6a4
2606:4700:20::ac43:44fe
2a00:1450:4001:80e::2008
2a00:1450:4001:813::2003
2a00:1450:4001:829::200a
2a06:98c1:3121::3
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codeforces.com Open in urlscan Pro 2606:4700:20::681a:6a4 Public Scan

Summary

urlscan.io Verdict: No classification

Domain & IP information

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Page Title

Page URL History Show full URLs

Detected technologies

Page Statistics

82 Requests

99 %HTTPS

86 %IPv6

5 Domains

6 Subdomains

6 IPs

3 Countries

682 kBTransfer

1826 kBSize

8 Cookies

2 Outgoing links

Page URL History

Redirected requests

82 HTTP transactions Everything HTML Script AJAX CSS Image Expand all 0 data transactions

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codeforces.com Open in urlscan Pro
2606:4700:20::681a:6a4 Public Scan

Screenshot
Live screenshot

Full Image

82
Requests

99 %
HTTPS

86 %
IPv6

5
Domains

6
Subdomains

6
IPs

3
Countries

682 kB
Transfer

1826 kB
Size

8
Cookies

82 HTTP transactions
0 data transactions