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Problem Category Points AC % Users ▾
Mock CCO '19 Contest 1 Problem 5 - A Tree Problem Mock CCO 25p 14.3% 6
Mock CCO '19 Contest 2 Problem 4 - A Geometry Problem Mock CCO 5p 9.9% 6
Triway Cup '19 Summer D - Napping Seasonal 15p 4.1% 6
OCC '19 G2 - A Guessing Game Olympiads School 25p 7.3% 6
CERC '07 E - Gates of Logic ICPC 20p 26.8% 6
COCI '17 Contest 7 #4 Clickbait COCI 15p 46.7% 6
Wesley's Anger Contest 2 Problem 6 - Haunted Houses WAC 30 33.3% 6
PIB '20 P4 - Ninjaclasher the Perfect Man Uncategorized 25p 27.4% 6
COCI '19 Contest 1 #4 Trobojnica COCI 15p 14.6% 6
ROI '17 P4 - Travel To Metropolis Uncategorized 25p 10.9% 6
CCO '04 P3 - S and K CCO 15p 4.5% 6
NOI '99 P3 - Birthday Cake China NOI 20p 12.7% 6
NOI '12 P5 - Food Festival China NOI 30p 20.9% 6
NOI '13 P5 - Calligrapher China NOI 30p 19.4% 6
ICPC NEERC 2010 E - Evacuation Plan ICPC 15p 12.7% 6
ICPC NEERC 2010 D - Dome of Circus ICPC 15p 25.7% 6
WC '18 Finals S4 - Posters Woburn Challenge 20p 24.0% 6
WC '16 Contest 3 S3 - Puzzle Rooms Woburn Challenge 15p 4.7% 6
WC '18 Finals S5 - Opening Weekend Woburn Challenge 25p 12.4% 6
WC '15 Contest 3 S4 - Lex Luthor's Landmines Woburn Challenge 30p 3.6% 6
WC '16 Finals S5 - Bovine Grenadiers Woburn Challenge 25p 10.3% 6
WC '02 Suicidal P2 - Klingon Roulette Woburn Challenge 10 15.6% 6
WC '98 P4 - GATTACA Woburn Challenge 20p 11.6% 6
CCCHK '15 S5 - Can I pass the courses? CCC 25p 5.4% 6
Super Boggle Uncategorized 15p 13.3% 6
Pipe Dream Uncategorized 15 9.1% 6
Baltic OI '05 P6 - Polygon Baltic OI 20 7.0% 6
COCI '20 Contest 3 #5 Specijacija COCI 25p 28.3% 6
COCI '10 Contest 2 #6 Crni COCI 12p 53.8% 6
COCI '10 Contest 3 #6 Mono COCI 12p 66.7% 6
COCI '16 Contest 5 #6 Strelice COCI 20p 7.1% 6
JOI '20 Spring Camp Day 2 P2 - Making Friends on Joitter is Fun JOI 30p 10.3% 6
NOI Winter Camp '09 P1 - A Shortest Path Problem China NOI 40p 50.4% 6
NOI '15 P6 - Farm China NOI 25p 6.1% 6
ICPC NWERC 2011 F - Pool Construction ICPC 25 35.3% 6
UCRPC F21 I - Sphere Mongers ICPC 15p 5.8% 6
Baltic OI '09 P6 - Monument Baltic OI 17 8.6% 6
Baltic OI '07 P5 - Connected Points Baltic OI 15p 29.2% 6
DMOPC '21 Contest 7 P5 - King's Commands DMOPC 35p 6.3% 6
NOI '22 Multi-Provincial Team Selection P5 - Bracket China NOI 35p 6.8% 6
NOIP '20 P3 - Game of Moving Ball China NOI 15p 12.3% 6
JOI '22 Open P1 - Seesaw JOI 17p 17.1% 6
JOI '22 Open P3 - School Road JOI 17p 17.9% 6
JOI '21 Spring Camp Day 4 P1 - Event Hopping 2 JOI 30p 58.3% 6
NOIP '18 Junior P3 - Shuttle Bus China NOI 12p 16.3% 6
IOI '22 P6 - Thousands Islands IOI 30p 3.1% 6
NOI '16 P2 - Grid China NOI 25p 7.4% 6
Google Code Jam '10 Qualification Round Problem B - Snapper Chain Google Code Jam 5p 42.9% 6
Google Code Jam '13 Qualification Round Problem A - Tic-Tac-Toe-Tomek Google Code Jam 7p 72.7% 6
Google Code Jam '18 Qualification Round Problem A - Saving The Universe Again Google Code Jam 5p 58.3% 6