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Problem Category Points AC % ▴ Users
DMPG '17 B5 - Hackathons DMOPC 7p 15.9% 159
Too Simple Seasonal 7 15.9% 533
IOI '14 P6 - Holiday IOI 30p 15.9% 84
TSOC '16 Contest 2 #6 - Hinata and Volleyball Graph TSOC 7p 15.9% 12
HCI '16 - Danger Room Uncategorized 7p 15.9% 23
DMOPC '21 Contest 4 P5 - Graph Generator DMOPC 20p 16.0% 17
APIO '07 P2 - Backup APIO 25p 16.0% 69
Graph Contest 1 P3 - Counting Cycles Uncategorized 10 16.0% 113
WC '99 Suicidal P6 - Wedding Juicer Woburn Challenge 15 16.0% 34
DMOPC '20 Contest 2 P6 - Unfair Game DMOPC 25p 16.0% 26
Mock CCC '22 Contest 2 J5 - Dominating the Olympics Mock CCC 10 16.0% 76
DMOPC '22 Contest 4 P3 - K-Knight DMOPC 15 16.0% 42
CCO '20 P5 - Interval Collection CCO 25p 16.0% 60
ECOO '17 R2 P3 - Lunch Time ECOO 12p 16.0% 26
TLE '17 Contest 6 P3 - Spencer and Contest TLE 7p 16.0% 63
CCC '99 S5 - Letter Arithmetic CCC 12 16.0% 77
Crosswords Uncategorized 15p 16.0% 4
COCI '11 Contest 5 #5 Blokovi COCI 20p 16.0% 3
CCO '03 P5 - Longest Substring CCO 7p 16.0% 91
NOI '03 P4 - Data Generator China NOI 20p 16.0% 74
WC '01 Suicidal P3 - Regis Woburn Challenge 7 16.0% 36
Wesley's Anger Contest 1 Problem 5 - Rule of Four WAC 20p 16.1% 31
DMOPC '20 Contest 1 P6 - Victor Identifies Software DMOPC 25p 16.1% 32
ACSL '09 Practice P7 - Cube Uncategorized 15 16.1% 27
MWC '15 #3 P2: Mechanical Pencils MWC 5p 16.1% 17
CCO '09 P6 - A Weighty Problem CCO 12p 16.1% 76
Mock CCC '18 Contest 2 J3/S1 - An Array Problem Mock CCC 7p 16.1% 372
IOI '03 P6 - Seeing the Boundary IOI 20p 16.1% 63
APIO '08 P2 - Roads APIO 20p 16.1% 82
Balkan OI '11 P5 - Time Is Money Balkan OI 30p 16.1% 46
WC '01 P5 - The Man With The Golden Eye Woburn Challenge 12 16.1% 16
Another Contest 5 Problem 4 - Tudor Interacts With Poop ACC 15p 16.1% 26
COCI '16 Contest 1 #4 Mag COCI 15p 16.1% 65
DMOPC '14 Contest 4 P4 - Sketchley Park DMOPC 12p 16.1% 101
DMOPC '19 Contest 6 P6 - Math is Difficult DMOPC 25p 16.1% 28
Waterloo 2001 Fall 1 E - A Multiplication Game Waterloo Local 7 16.1% 3
Wesley's Anger Contest 6 Problem 7 - SantaTracker++ WAC 25p 16.1% 7
UTS Open '18 P6 - Subset Sum Uncategorized 25p 16.1% 22
OCC '19 B2 - Cinematic Olympiads School 5 16.2% 75
CCCHK '15 S3 - Symmetric Cross CCC 12p 16.2% 20
MEC '16 P4 - Circuitry Seasonal 15p 16.2% 21
Digger Uncategorized 15p 16.2% 19
QCC P5 - Vaccine Delivery Uncategorized 12 16.2% 25
CPC '21 Contest 1 P1 - AQT and Fractions Uncategorized 5p 16.2% 252
Yet Another Contest 7 P3 - No More Math Homework YAC 12p 16.2% 89
DMOPC '21 Contest 5 P3 - Permutations & Primes DMOPC 12p 16.2% 148
CCC '23 S5 - The Filter CCC 20p 16.2% 87
Wesley's Anger Contest 6 Problem 3 - Difference Sorting WAC 10p 16.2% 118
DMPG '18 S5 - Mimi and Division DMOPC 15p 16.2% 170
Back To School '16: Dodgeball Seasonal 7p 16.3% 197