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Problem Category Points ▴ AC % Users
Ray's Tricky Connectivity Uncategorized 10p 21.8% 76
DMOPC '19 Contest 4 P2 - Pleasant Present DMOPC 10p 18.0% 121
Total Destruction Uncategorized 10p 44.8% 91
Mock CCC '20 S3 - SAM I Am Mock CCC 10p 12.7% 72
Mock CCC '20 Contest 2 S3 - Tree Programming Mock CCC 10p 15.5% 79
Mock CCC '20 Contest 2 S4 - Rotational Arrays Mock CCC 10p 11.8% 61
COCI '19 Contest 5 #5 Zapina COCI 10p 58.2% 93
DMOPC '19 Contest 6 P3 - Grade 11 Math DMOPC 10p 14.4% 119
PIB '20 P5 - 4D Matrices Uncategorized 10p 39.8% 23
COCI '19 Contest 2 #2 Slagalica COCI 10p 16.7% 23
CCC '20 S2 - Escape Room CCC 10p 12.8% 1695
James' Rectangles Uncategorized 10p 33.7% 88
2-D Permutations Uncategorized 10p 20.6% 158
Grid 1.5 Uncategorized 10p 9.9% 45
DMOPC '19 Contest 7 P2 - Dinner Party DMOPC 10 18.6% 143
QCC P1 - Quarantine Games Uncategorized 10 28.9% 37
Path Finder Uncategorized 10p 15.3% 100
CCO '20 P1 - A Game with Grundy CCO 10p 20.2% 215
CCO '06 P2 - R & J CCO 10 20.8% 35
COCI '09 Contest 2 #4 Vuk COCI 10 31.7% 98
COCI '15 Contest 7 #3 Ozljeda COCI 10 51.1% 36
COCI '09 Contest 3 #4 Razgovori COCI 10p 48.8% 111
ACM U of T Tryouts C3 E - A Brief Expedition ICPC 10 34.3% 67
ACM U of T Tryouts C2 C - Homemade Asteroids ICPC 10 19.5% 27
ACM U of T Tryouts C1 D - Reverse Fox Hunt ICPC 10 32.5% 64
ACM U of T Tryouts C3 C - A Subtle Surf ICPC 10 22.6% 72
NOI '14 P1 - Getting-Up Syndrome China NOI 10p 27.0% 153
NOI '00 P5 - Frogs Crossing the River China NOI 10p 29.7% 24
NOI '03 P2 - Text Editor China NOI 10p 23.8% 40
Good Predictions Uncategorized 10 33.0% 73
Good Strategy Uncategorized 10 25.0% 68
Good Aim Uncategorized 10 17.4% 31
PEG Test '11 - Cyclopian Puzzle Uncategorized 10 54.1% 353
A Game Uncategorized 10 29.9% 369
Counting Subsequences Uncategorized 10 21.6% 308
Bulgarian OI '09 P1 - Minesweeper Bulgarian OI 10 42.3% 65
PEG Test '14 - Spirits Uncategorized 10 10.5% 15
Graph Contest 1 P1 - Counting Paths Uncategorized 10 19.4% 95
Graph Contest 2 P2 - Directed Acyclic Graph Uncategorized 10 17.4% 393
Graph Contest 3 P2 - Shortest Path Uncategorized 10p 24.1% 287
Graph Contest 1 P3 - Counting Cycles Uncategorized 10 16.0% 113
IOI '94 P2 - The Castle IOI 10 18.8% 127
IOI '94 P4 - The Clocks IOI 10 27.2% 121
IOI '96 P4 - Sorting a Three-Valued Sequence IOI 10 31.9% 142
IOI '96 P1 - A Game IOI 10 39.2% 270
IOI '99 P1 - Little Shop of Flowers IOI 10 30.6% 205
IOI '04 P4 - Phidias IOI 10p 53.6% 888
ACSL '09 Contest 1 Senior - Bridge Uncategorized 10p 25.0% 15
ACSL '09 Contest 3 Senior - Pinochle Uncategorized 10p 34.1% 3
ACSL '09 Practice P3 - Zeroes Uncategorized 10 21.6% 126