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Problem Category Points AC % ▴ Users
GFSSOC '15 Fall S5 - Raider GFSSOC 17p 14.0% 137
DMOPC '22 Contest 1 P3 - Group Project DMOPC 12p 14.0% 95
ECOO '12 R2 P2 - Password Strength ECOO 5p 14.0% 20
Mock CCC '23 1 S5 - The Obligatory Data Structures Problem Mock CCC 25p 14.0% 10
Sword Art Online Judge Seasonal 7 14.0% 101
Bulgarian OI '09 P5 - Special Sequence Bulgarian OI 30p 14.0% 27
NOIP '99 P2 - Palindrome Numbers China NOI 7p 14.1% 25
IOI '16 P1 - Detecting Molecules (Standard I/O) IOI 12p 14.1% 230
BSSPC '21 J4 - James's Magical Soups Uncategorized 7p 14.1% 92
DMOPC '18 Contest 5 P2 - A Photography Problem DMOPC 7 14.1% 127
DMOPC '15 Contest 6 P3 - Harvest DMOPC 7p 14.1% 314
DMPG '16 S2 - Pandemic DMOPC 7p 14.1% 85
DMOPC '18 Contest 1 P4 - Sorting DMOPC 12p 14.1% 85
CCC '10 S1 - Computer Purchase CCC 5 14.1% 1323
DMOPC '23 Contest 1 P2 - Knights on Chessboard DMOPC 10p 14.1% 197
CCC '17 S4 - Minimum Cost Flow CCC 17p 14.1% 771
DMOPC '16 Contest 3 P3 - Phantom Fight DMOPC 10p 14.1% 98
Wesley's Anger Contest 2 Problem 4 - The Ninth Triangle of the Underworld WAC 20 14.1% 11
COCI '08 Contest 2 #6 Cavli COCI 25p 14.1% 25
PEG Test '14 - Gift Delivery Uncategorized 10 14.1% 12
Geography Class Uncategorized 5p 14.1% 67
TLE '16 Contest 7 P2 - Judging TLE 15p 14.2% 10
Baltic OI '04 P1 - Ships Baltic OI 7p 14.2% 12
CCC '18 S3 - RoboThieves CCC 12p 14.2% 1135
CCO '05 P6 - Windows CCO 30p 14.2% 28
Mock CCC '24 Contest 1 S5 - Mock CCC 2025 Mock CCC 20p 14.2% 18
TLE '16 Contest 6 (Mock CCC) J3 - Two Kangaroos TLE 5p 14.2% 42
CCO '04 P4 - Return of Space Turtle CCO 12 14.2% 46
DMOPC '22 Contest 4 P1 - Alone Time DMOPC 5p 14.2% 179
Another Contest 3 Problem 4 - Range Updates and Range Queries ACC 15 14.2% 54
The Return of A Plus B Seasonal 0p 14.2% 341
Mock CCO '18 Contest 4 Problem 1 - Mining for Minerals Mock CCO 15p 14.2% 40
CCO '16 P2 - Splitting Hares CCO 15p 14.2% 89
DMOPC '21 Contest 3 P4 - Sorting Subsequences DMOPC 20p 14.2% 32
DMOPC '21 Contest 10 P3 - Peculiar Reflections DMOPC 12p 14.2% 75
TLE '17 Contest 8 P3 - Curious Numbers TLE 10p 14.3% 70
The Contest Contest 1 P2 - A Typical CCC Senior Problem Uncategorized 10p 14.3% 176
Heap Dijkstra Revisited Data Structure Tests 10 14.3% 10
OCC '19 G3 - Binary Game Olympiads School 25p 14.3% 5
COCI '09 Contest 5 #6 Chuck COCI 25p 14.3% 1
WC '15 Contest 3 S1 - Energy Absorption Woburn Challenge 7p 14.3% 34
Google Code Jam '15 Qualification Round Problem D - Ominous Omino Google Code Jam 12p 14.3% 3
Amplitude Hackathon '23 Practice Problem 2 - Go Amplitude! Uncategorized 5p 14.3% 19
UACC 1 P5 - A Lab Report Uncategorized 10 14.3% 52
CCO '09 P4 - Bottle Caps CCO 20p 14.3% 38
CEOI '17 P3 - Mousetrap CEOI 25p 14.4% 16
COCI '06 Contest 1 #6 Debug COCI 20p 14.4% 121
OCC '19 S3 - NAN Language Olympiads School 7p 14.4% 31
IOI '99 P2 - Hidden Codes IOI 20p 14.4% 10
RGPC '17 P4 - Snow Day Uncategorized 10p 14.4% 102