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Problem Category Points AC % ▾ Users
Mock CCO '18 Contest 3 Problem 6 - Roger Asks For More Marks Mock CCO 30p 15.5% 8
Mock CCC '20 Contest 2 S3 - Tree Programming Mock CCC 10p 15.5% 79
Wesley's Anger Contest Reject 1 - Stupendous Bowties 2 WAC 17 15.5% 25
DWITE '12 R5 #4 - Fencing Problems DWITE 5 15.5% 9
CCC '23 S3 - Palindromic Poster CCC 10p 15.5% 420
CCO '96 P6 - Hoppers CCO 15 15.5% 29
WC '02 P6 - Obstacles Galore Woburn Challenge 10 15.5% 13
DMOPC '17 Contest 2 P6 - Lazy Days DMOPC 15p 15.4% 36
MMCC '15 P2 - Akame Uncategorized 25p 15.4% 46
Riolku's Mock CCC S2 - Keen Keener Sequence Mock CCC 7p 15.4% 147
Bubble Cup V9 C Paint it really, really black Bubble Cup 10 15.4% 21
DMOPC '17 Contest 2 P5 - Game DMOPC 20p 15.4% 9
DMOPC '21 Contest 2 P5 - Permutations DMOPC 25p 15.4% 15
DMOPC '19 Contest 7 P7 - Fluid Dynamics DMOPC 35p 15.4% 15
CCO '18 P2 - Wrong Answer CCO 12p 15.4% 115
Sudoku Challenge Uncategorized 7p 15.4% 63
NOIP '18 P5 - Grid-filling Game China NOI 20p 15.4% 5
COI '18 #4 Tenis COCI 30p 15.4% 4
Appleby Contest '20 P4 - Philosophy Class Uncategorized 12p 15.4% 86
DMOPC '17 Contest 4 P6 - Best Girl DMOPC 25p 15.4% 10
CCO '15 P2 - Artskjid CCO 15p 15.4% 503
DMPG '16 B6 - Counting Money DMOPC 7p 15.3% 44
IOI '12 P2 - Parachute Rings IOI 25p 15.3% 24
STNBD P4 - Ellis Fahrengart Uncategorized 17p 15.3% 136
IOI '07 P1 - Aliens IOI 12p 15.3% 21
COCI '22 Contest 3 #4 Bomboni COCI 12p 15.3% 61
TSOC '16 Contest 2 #2 - Oh My! TSOC 10 15.3% 18
Baltic OI '06 P6 - Jump Baltic OI 7p 15.3% 22
Amplitude Hackathon '23 Problem 4 - Frequency Queries Uncategorized 7p 15.3% 16
Collate The Findings Uncategorized 0 15.3% 34
CCO '19 P4 - Card Scoring CCO 25p 15.3% 68
GlobeX Cup '18 S3 - Playing With Bits Uncategorized 10p 15.3% 46
NOI '04 P1 - The Depressed Cashier China NOI 20p 15.3% 87
COCI '16 Contest 3 #5 Zoltan COCI 15p 15.2% 22
Thog's Fortnite 2 Uncategorized 17p 15.2% 8
JOI '16 Open P2 - Selling RNA Strands JOI 20 15.2% 15
RGPC '17 P1 - Circle Clicking! Uncategorized 5 15.2% 141
CCO '01 P6 - Election Night CCO 15 15.2% 47
An Animal Contest 7 P2 - Squirrel Structures AAC 7p 15.2% 138
OCC '19 B1 - Darcy_Liu Olympiads School 3 15.2% 159
Adaptive Mechanized Calcium Chlorohypochlorite Uncategorized 25 15.2% 9
Back To School '18: Beautiful Trees Seasonal 10p 15.2% 102
DMOPC '18 Contest 6 P5 - Quadrat Sampling DMOPC 20p 15.2% 60
UTS Open '18 P5 - Room 666 Uncategorized 25p 15.2% 14
IOI '11 P1 - Tropical Garden IOI 25p 15.2% 37
Wesley++ Seasonal 15p 15.2% 10
Baltic OI '12 P2 - Mobile Baltic OI 15p 15.2% 8
An Animal Contest 2 P3 - Koala Balloons AAC 12p 15.1% 179
COCI '18 Contest 2 #5 Sunčanje COCI 25p 15.1% 21
SAC '22 Code Challenge 4 P5 - Obligatory Interactive Problem SAC Coding Challenge 12p 15.1% 55