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Problem Category Points AC % ▾ Users
Facebook Hacker Cup '15 Round 2 P4 - Fox Socks FHC 30 10.3% 21
WC '16 Finals S5 - Bovine Grenadiers Woburn Challenge 25p 10.3% 6
UHCC1 P3 - Busy Elevator Uncategorized 5 10.3% 55
DMOPC '15 Contest 7 P4 - Magic DMOPC 10p 10.3% 32
Mohan's Physics Problem Uncategorized 7 10.3% 39
COCI '08 Contest 3 #4 Matrica COCI 20p 10.3% 16
COCI '09 Contest 1 #6 Aladin COCI 25p 10.3% 12
Back To School '17: New English Seasonal 12p 10.3% 81
COCI '08 Contest 1 #5 Skakavac COCI 20p 10.3% 61
COI '13 #4 Nizovi COCI 20p 10.2% 11
NOI '04 P4 - Rainfall China NOI 25p 10.2% 5
Word Counting Uncategorized 10 10.2% 9
NOI '20 P5 - Surreal China NOI 17p 10.2% 17
COCI '20 Contest 6 #4 Geometrija COCI 25p 10.2% 8
Yet Another Contest 4 P3 - Canadian Cactus Competition YAC 12p 10.2% 52
NOI '07 P4 - Necklace Factory China NOI 20p 10.1% 25
WC '16 Contest 3 S1 - Cutting Edge Woburn Challenge 7p 10.1% 28
CCO '01 P5 - Fast Food CCO 7 10.1% 29
Mock CCC '23 Contest 1 J5 - Calculus Problem Mock CCC 12p 10.1% 41
TSOC '15 Contest 2 #3 - Funny Anagrams TSOC 7 10.1% 39
MNYC '16: ECOO! Seasonal 5p 10.1% 50
IOI '07 P5 - Pairs IOI 25p 10.1% 117
BPC 1 J4 - Assignment of the Year Uncategorized 10p 10.0% 46
Not an Aho-Corasick Problem Uncategorized 20 10.0% 11
IOI '16 P4 - Paint by Numbers (Standard I/O) IOI 15p 10.0% 63
Mock CCC '18 Contest 3 J5/S3 - A Cookie-Cutter Problem Mock CCC 10p 10.0% 59
CCC '97 S3 - Double Knockout Competition CCC 5 10.0% 158
DMPG '17 S6 - Brackets, Braces, and Boxes DMOPC 12p 10.0% 29
COCI '08 Contest 1 #6 Krtica COCI 25p 10.0% 48
OCC '19 G6 - Monkeys in a Tree Olympiads School 30p 10.0% 9
NOI '11 P6 - Bunny and Eggy's Game China NOI 25p 10.0% 5
ICPC NEERC 2010 C - Cactus Revolution ICPC 30p 10.0% 1
ICPC SWERC 2017 K - Blowing Candles ICPC 15 10.0% 4
DMOPC '21 Contest 3 P6 - Good Grids DMOPC 30p 10.0% 7
Baltic OI '04 P5 - Rectangles Baltic OI 10p 10.0% 5
Waterloo 2008 Spring A - Trainsorting Waterloo Local 10 10.0% 4
DMOPC '20 Contest 4 P5 - Cyclic Cypher DMOPC 17p 10.0% 31
WC '15 Contest 1 S3 - Contest Sites Woburn Challenge 17p 9.9% 56
DMOPC '16 Contest 1 P2 - Lines DMOPC 7p 9.9% 72
CCC '97 S5 - Long Division CCC 10 9.9% 65
MALD Contest 1 P5 - Scratch Cat and Desktop Backgrounds Uncategorized 17p 9.9% 17
CCO '23 P3 - Line Town CCO 30p 9.9% 22
IOI '08 P3 - Fish IOI 35p 9.9% 63
Grid 1.5 Uncategorized 10p 9.9% 45
Mock CCO '19 Contest 2 Problem 4 - A Geometry Problem Mock CCO 5p 9.9% 6
System Solver Uncategorized 15 9.8% 34
Line Sweep Uncategorized 25 9.8% 29
CCO '16 P3 - Legends CCO 30p 9.8% 62
CCO '09 P2 - Dinner CCO 20p 9.8% 50
APIO '22 P3 - Permutation APIO 20p 9.8% 12