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Problem Category Points ▾ AC % Users
COCI '22 Contest 1 #5 Neboderi COCI 15p 25.5% 47
DMOPC '22 Contest 4 P3 - K-Knight DMOPC 15 16.0% 42
NOIP '04 P4 - Bugs Eating Computation China NOI 15p 5.5% 9
NOIP '07 P3 - Removing Numbers from Matrix China NOI 15p 20.4% 22
NOIP '08 P3 - Message Passing China NOI 15p 42.9% 16
Mock CCC '23 1 S4 - Roger Says Yabe Mock CCC 15p 7.2% 19
Max's Anger Contest Series 1 P4 - Greedily Gamboling (Hard Version) Seasonal 15p 28.7% 13
Mock CCC '23 2 S4 - Roger Says Yabe Mock CCC 15p 19.0% 7
CCC '23 S4 - Minimum Cost Roads CCC 15p 19.8% 253
COCI '22 Contest 5 #4 Slastičarnica COCI 15p 32.9% 46
Google Code Jam '09 Round 1A Problem B - Crossing the Road Google Code Jam 15p 11.1% 1
Google Code Jam '11 Qualification Round Problem D - GoroSort Google Code Jam 15p 33.3% 2
Google Code Jam '12 Qualification Round Problem D - Hall of Mirrors Google Code Jam 15p 33.3% 1
Google Code Jam '21 Qualification Round Problem E - Cheating Detection Google Code Jam 15p 15.0% 3
Another Contest 10 Problem 3 - Wesley's Anger Contest 7 Problem 3 - The Obligatory Rage Tree Problem ACC 15p 1.1% 2
Waterloo 2008 Spring E - Balance Waterloo Local 15 0.0% 0
ETSR '23 Online Round 2 Problem 3 - Stone Game Uncategorized 15p 5.2% 44
ETSR '23 Online Round 2 Problem 2 - Equation Uncategorized 15p 4.4% 35
ETSR '23 Onsite Round 1 Problem 2 - Origami Uncategorized 15p 21.0% 24
Singularity Cup P3 - Interplanetary Travel Uncategorized 15p 9.4% 98
COCI '23 Contest 1 #4 Kocke COCI 15p 23.0% 24
WOSS Dual Olympiad 2023 S3: Flying Uncategorized 15p 23.3% 16
COCI '23 Contest 2 #5 Zatopljenje COCI 15p 39.6% 31
Yet Another Contest 8 P4 - Fluke 2 YAC 15p 3.3% 43
COCI '23 Contest 3 #5 Slučajna Cesta COCI 15p 36.5% 17
COCI '23 Contest 5 #3 Piratski Kod COCI 15p 38.9% 12
COCI '23 Contest 5 #4 Rolete COCI 15p 26.6% 17
Infinity Card Decks Olympiads School 15p 16.9% 12
City Travel Olympiads School 15p 13.1% 14
A Plus B (Hard) Uncategorized 12 11.0% 318
Mock ECOO '14 P1 - Do You Want to Build a Snowman? ECOO 12 8.5% 54
CCC '05 S5 - Pinball Ranking CCC 12p 19.5% 738
CCC '06 S3 - Tin Can Telephone CCC 12 20.8% 526
CCC '09 S5 - Wireless CCC 12p 34.9% 620
The Game of Nim Uncategorized 12p 29.5% 29
CCC '11 S5 - Switch CCC 12p 18.3% 412
Halloween '14 P2 - Cat Girls Seasonal 12p 27.8% 205
DMOPC '14 Contest 2 P6 - Selective Cutting DMOPC 12p 29.2% 378
COCI '14 Contest 2 #3 Studentsko COCI 12p 45.0% 246
GFSSOC '14 Winter S3 - Hide n Seek GFSSOC 12p 25.0% 186
COCI '14 Contest 3 #3 Silueta COCI 12p 29.9% 38
STNBD P2 - Claire Elstein Uncategorized 12p 22.7% 227
Tree Cutting Seasonal 12p 35.0% 141
VM7WC '15 #2 Gold - Uniting the Earth Empire VM7WC 12 20.3% 303
Facebook Hacker Cup '15 Round 1 P3 - Winning at Sports FHC 12 50.3% 195
VM7WC '15 #3 Gold - Pollos VM7WC 12 15.9% 48
Mock CCC '15 S3 - The Tachyon Trap Mock CCC 12p 18.4% 65
Facebook Hacker Cup '15 Round 3 P1 - Boomerang FHC 12p 25.7% 24
VM7WC '15 #5 Gold - Tree Planting VM7WC 12 23.7% 232
DMOPC '14 Contest 4 P4 - Sketchley Park DMOPC 12p 16.1% 101