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Problem Category Points AC % Users ▾
DMOPC '21 Contest 5 P5 - Permutations & Primes DMOPC 30p 10.9% 24
COCI '21 Contest 4 #5 Šarenlist COCI 17p 30.0% 24
COI '12 #4 Spijuni COCI 10p 30.4% 24
Yet Another Contest 4 P6 - No More Solitaire YAC 20p 6.7% 24
JOI '20 Open P3 - Power Plant JOI 15p 40.7% 24
NOI '16 P4 - Interval China NOI 20p 20.4% 24
Baltic OI '01 P6 - Teleports Baltic OI 10p 37.8% 24
ETSR '23 Onsite Round 1 Problem 2 - Origami Uncategorized 15p 21.0% 24
Amplitude Hackathon '23 Practice Problem 3 - Demo Day Demos Uncategorized 5p 31.2% 24
The Contest Contest 1 P5 - A Typical CCO Problem Uncategorized 20p 4.2% 24
Mock CCC '24 Contest 1 S3 - Optimal Split Point Mock CCC 10p 3.0% 24
New Year's '16 P5 - Eggnog Dilemma Seasonal 12p 5.4% 23
HCI '16 - Danger Room Uncategorized 7p 15.9% 23
Next Semiprime Uncategorized 10p 11.2% 23
COCI '08 Contest 5 #6 Kruska COCI 10p 52.6% 23
DMPG '18 G3 - Lonely Carrot's Anguish DMOPC 30p 12.6% 23
Summer Institute '17 Contest 3 P4 - Customs SIUCF 15 41.0% 23
DWITE '09 R2 #5 - Portals Redux DWITE 12 39.7% 23
ICPC PACNW 2016 F - Illumination ICPC 12 20.4% 23
Greater New York Regional 2012 - Mystery ICPC 5 47.1% 23
Mock CCO '18 Contest 3 Problem 2 - Roger Delegates Work to Jessica Mock CCO 20p 28.9% 23
COCI '18 Contest 2 #2 Kocka COCI 7p 33.3% 23
CCO '98 P2 - Message Deciphering CCO 7 55.2% 23
DMOPC '19 Contest 2 P6 - Two Roots DMOPC 20p 12.0% 23
OCC '19 G5 - King kobortor's Infrastructure Olympiads School 17p 24.7% 23
DMOPC '19 Contest 3 P5 - Festival DMOPC 20 11.5% 23
PIB '20 P5 - 4D Matrices Uncategorized 10p 39.8% 23
COCI '19 Contest 2 #2 Slagalica COCI 10p 16.7% 23
NOI '97 P5 - Building Game China NOI 15p 27.1% 23
NOI '08 P1 - Masquerade Party China NOI 15p 9.1% 23
IOI '95 Practice Task 3 - Bar Codes IOI 12p 35.4% 23
WC '18 Finals S3 - Screen Time Woburn Challenge 15p 19.8% 23
DMOJ Capture The Flag '20 B2 - Strings CTF 7 16.5% 23
COCI '11 Contest 5 #4 Razbibriga COCI 12p 34.7% 23
ECOO '21 P5 - Waldwick's Walk ECOO 17p 21.6% 23
Monkey Motel Uncategorized 12p 21.5% 23
ICPC NEERC 2012 C - Caravan Robbers ICPC 10 9.6% 23
CEOI '09 P2 - Harbingers CEOI 25p 12.6% 23
Cheerio Contest 2 P5 - Subsequence Queries Uncategorized 7p 26.5% 23
WOSS Dual Olympiad 2022 S3: Sightseeing in the North Pole Seasonal 12 16.9% 23
Waterloo 2023 Winter A - So I'll Max Out My Constructive Algorithm Skills Waterloo Local 5 32.9% 23
COCI '22 Contest 4 #3 Bojanje COCI 17p 55.8% 23
COCI '23 Contest 3 #2 Vrsar COCI 10p 13.6% 23
Facebook Hacker Cup '15 Round 2 P3 - Autocomplete Strikes Back FHC 20 49.0% 22
CSPC '15 #4 - Reading Logs CSPC 5 11.5% 22
Executable Format Uncategorized 10 28.3% 22
DMOPC '14 Contest 5 P5 - Attack on Anti-Spiral DMOPC 25p 16.7% 22
DMPG '15 B6 - Bad S'mores DMOPC 10p 5.9% 22
DMOPC '15 Contest 3 P6 - Gala DMOPC 30p 11.3% 22
GFSSOC '15 Winter J4 - Christmas Music GFSSOC 5p 13.2% 22