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Problem Category Points AC % Users ▾
DMOPC '15 Contest 4 P5 - Scribe DMOPC 15p 26.7% 38
DMOPC '15 Contest 4 P6 - Alarms DMOPC 12p 37.5% 38
COCI '15 Contest 3 #2 Esej COCI 5 12.3% 38
IOI '13 P3 - Wombats IOI 40p 13.2% 38
Facebook Hacker Cup '17 Qualifying Round P2 - Lazy Loading FHC 5p 41.5% 38
TLE '16 Contest 7 P1 - Math Helper TLE 5p 17.0% 38
Mock CCO '17 Problem 3 - Connection Mock CCO 20p 12.5% 38
DMOPC '17 Contest 1 P6 - Land of the Carrot Trees DMOPC 20p 19.6% 38
DWITE '09 R2 #3 - Binary Test String DWITE 5 36.2% 38
TLE '17 Contest 4 P6 - Fax's Christmas Bash TLE 25p 18.8% 38
DMOPC '17 Contest 4 P5 - Revised IOI DMOPC 12 28.8% 38
Mock CCO '18 Contest 4 Problem 2 - Sunken Colonies Mock CCO 15p 43.5% 38
IOI '11 P1 - Tropical Garden IOI 25p 15.3% 38
New Year's '19 P7 - The Order of the Fox Seasonal 20 10.6% 38
LKP '18 Contest 2 P4 - The Zagonetka Machine Uncategorized 12p 13.9% 38
COCI '18 Contest 6 #4 Simfonija COCI 15p 20.9% 38
DMPG '19 S4 - Confusing Crossword Conundrum DMOPC 12p 13.5% 38
CCO '02 P4 - Duathlon CCO 10 11.3% 38
COCI '19 Contest 1 #5 Zoo COCI 12p 31.5% 38
NOI '97 P1 - Competition Ranking China NOI 7 32.3% 38
IOI '03 P5 - Amazing Robots IOI 20 11.4% 38
WC '95 P2 - Round Numbers Woburn Challenge 12p 8.7% 38
WC '99 P6 - Fight Club Woburn Challenge 10 23.8% 38
Stingy Candyman Uncategorized 10 24.5% 38
UTS Open '21 P4 - Lucky Graph Uncategorized 15p 16.9% 38
Cheerio Contest 2 P3 - Digits Uncategorized 5p 20.4% 38
SAC '22 Code Challenge 4 Junior P5 - Obligatory Output Only Problem SAC Coding Challenge 10 24.6% 38
A Math Contest P14 - Choosing Marbles Uncategorized 25p 21.9% 38
Baltic OI '11 P6 - Plagiarism Baltic OI 7p 27.4% 38
Lyndon's Golf Contest 1 P7 - Fun Factoring Uncategorized 0p 40.5% 38
Mock CCC '23 2 S2 - Keenan Hates Triangles Mock CCC 7p 2.3% 38
Amplitude Hackathon '23 Problem 3 - Dedupe Uncategorized 5p 53.3% 38
Amplitude Hackathon '23 Problem 2 - Gigatron Lag Uncategorized 3p 26.2% 38
MWC '15 #7 P3: Blue and Green MWC 15p 14.9% 37
DMOPC '16 Contest 3 P6 - Long Lost Love DMOPC 17p 18.9% 37
ECOO '14 R2 P1 - Scratch and Win ECOO 5p 8.9% 37
DWITE '07 R5 #4 - Train ride DWITE 7 53.4% 37
DWITE '09 R3 #5 - Up To Four Colours DWITE 12 61.3% 37
DWITE '10 R4 #3 - Binary Weight DWITE 5 21.7% 37
Confirmation Bias Uncategorized 10 13.6% 37
Valentine's Day '18 S5 - Carol's Calculating Continuity Mock CCC 20 22.5% 37
Mock CCO '18 Contest 4 Problem 6 - Splitting Drones Mock CCO 15p 34.6% 37
ECOO '18 R2 P1 - Artificial Photosynthesystem ECOO 7p 39.5% 37
Falling Snowflakes Uncategorized 15p 40.7% 37
DMPG '19 S6 - A Strange Array DMOPC 15p 14.6% 37
CEOI '19 P2 - Dynamic Diameter CEOI 25p 11.8% 37
QCC P1 - Quarantine Games Uncategorized 10 28.9% 37
NOI '14 P6 - Ticket Purchase China NOI 30p 13.0% 37
NOI '09 P1 - Transformed Sequence China NOI 20p 19.8% 37
Baltic OI '16 P1 - Bosses Baltic OI 10p 41.4% 37