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Problem Category Points ▴ AC % Users
DMOPC '21 Contest 6 P4 - Colourful Paths DMOPC 15p 9.1% 98
Baltic OI '11 P4 - Treasures and Vikings Baltic OI 15p 37.7% 18
Yet Another Contest 2 P4 - No More Arithmetic YAC 15p 15.1% 51
COI '19 #4 Zagrade COCI 15p 21.5% 17
CCC '22 S4 - Good Triplets CCC 15p 28.5% 310
Baltic OI '15 P3 - Network Baltic OI 15p 26.0% 31
Baltic OI '15 P5 - Hacker Baltic OI 15p 43.9% 14
COI '14 #2 Kovanice COCI 15p 12.4% 19
Yet Another Contest 3 P3 - Topography YAC 15p 2.4% 17
Yet Another Contest 3 P4 - Rumour YAC 15p 26.2% 69
Another Random Contest 1 P6 - Smash Bros Uncategorized 15p 20.3% 15
Another Random Contest 1 P5 - A Strange Country Uncategorized 15p 14.9% 45
Another Random Contest 1 P4 - Bracket Query Uncategorized 15p 44.3% 34
Comparing Arrays Uncategorized 15p 16.9% 62
Cheerio Contest 1 S5 - Coin Game Uncategorized 15p 46.4% 35
Levve Loves Segment Trees Uncategorized 15 12.3% 38
Baltic OI '03 P5 - Lamps Baltic OI 15p 29.9% 17
Spy Tree Uncategorized 15p 21.9% 19
A Math Contest P11 - Weak Goldbach's Conjecture Uncategorized 15 23.9% 58
Baltic OI '13 P4 - Brunhilda's Birthday Baltic OI 15p 27.0% 10
NOIP '20 P3 - Game of Moving Ball China NOI 15p 12.3% 6
NOI '02 P2 - Naughty Kid China NOI 15p 22.5% 14
Baltic OI '14 P5 - Portals Baltic OI 15p 23.4% 16
Baltic OI '14 P6 - Senior Postmen Baltic OI 15p 19.8% 14
SGS Programming Challenge P3 - Tree in Biology Class Uncategorized 15p 16.5% 39
Baltic OI '12 P1 - Brackets Baltic OI 15p 32.7% 12
Baltic OI '12 P2 - Mobile Baltic OI 15p 15.2% 8
Yet Another Contest 6 P5 - No More Coyotes YAC 15p 22.5% 25
JOI '20 Open P3 - Power Plant JOI 15p 39.8% 23
CEOI '22 P2 - Homework CEOI 15p 45.2% 70
Baltic OI '01 P5 - Mars Maps Baltic OI 15p 14.7% 29
DMOPC '22 Contest 3 P3 - Ina's Takodachis DMOPC 15p 5.7% 58
Waterloo 2022 Fall B - Lightbulbs Waterloo Local 15 19.3% 15
EGOI '22 P2 - Lego Wall EGOI 15p 12.2% 18
EGOI '22 P3 - Social Engineering EGOI 15p 7.1% 16
Max's Anger Contest Series 1 P5 - Slacking Subsequences Seasonal 15p 30.9% 58
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% 254
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