Problems Problem search Full text search Show problem types Category All --- ACM-ICPC APIO Bubble Cup CCC CCO CEOI Classics COCI CSPC Data Structure Tests DMOPC DWITE ECOO FHC Fun Math GCJ GFSSOC IOI JOI Mock CCC MWC Seasonal SIUCF TLE TSOC Uncategorized VM7WC GoRandom Hot problems Summer Institute '17 Contest 1 #1 - Ant Clans CCC '15 J4 - Wait Time THICC '17 P4 - Kenta's Neural Networks CCC '13 S2 - Bridge Transport CCC '14 S4 - Tinted Glass Window CCC '11 S2 - Multiple Choice CCC '10 S2 - Huffman Encoding « 1 2 3 4 5 6 7 8 ... 26 27 » Problem Category Points AC % Users CCCJQR P1 Seasonal 3 15.3% 160 CCCJQR P2 Seasonal 3 24.4% 76 CCCJQR P3 Seasonal 7 3.2% 11 CCCJQR P4 Seasonal 7 40.3% 9 CCCJQR P5 Seasonal 15p 25.4% 21 CCCJQR P6 Seasonal 50 0.0% 0 CCO '00 P1 - Subsets CCO 10 41.1% 67 CCO '05 P1 - Number Matrix CCO 10 35.8% 25 CCO '05 P5 - Segments CCO 10p 40.5% 33 CCO '07 P1 - Cows CCO 10 23.5% 24 CCO '07 P2 - Snowflakes CCO 10p 28.1% 58 CCO '07 P3 - Bowling for Numbers++ CCO 20p 37.5% 27 CCO '07 P4 - Gerrymandering CCO 30p 0.4% 22 CCO '07 P6 - Road Construction CCO 20p 25.0% 13 CCO '10 P1 - Barking Dogs! CCO 10 28.6% 30 CCO '10 P2 - Tree Pruning CCO 15 40.8% 26 CCO '10 P3 - Wowow CCO 20p 18.7% 42 CCO '10 P4 - Computer Purchase Return CCO 10 44.9% 40 CCO '10 P5 - Space Miner CCO 15 35.0% 10 CCO '10 P6 - Shuffle CCO 10 36.5% 29 CCO '11 P1 - Putnam CCO 7 36.8% 7 CCO '11 P2 - Vampire Tunnels CCO 15p 10.2% 29 CCO '11 P3 - Spies Like Us CCO 10p 34.3% 21 CCO '11 P4 - Reorganization CCO 15p 20.1% 25 CCO '11 P5 - Fixing Disks CCO 40p 0.0% 1 CCO '11 P6 - Biggest (Zero Carbon) Footprint CCO 25p 24.2% 7 CCO '12 P1 - Choose Your Own Arithmetic CCO 7 44.0% 10 CCO '12 P2 - The Hungary Games CCO 15 22.7% 23 CCO '12 P3 - Mhocskian Languages CCO 20p 87.5% 4 CCO '12 P4 - Editor Distance CCO 10 39.1% 9 CCO '12 P5 - Sample Size CCO 7 23.4% 23 CCO '12 P6 - The Winds Of War CCO 30p 61.3% 6 CCO '13 P1 - All Your Base Belong to Palindromes CCO 10p 13.9% 69 CCO '13 P2 - Tourney CCO 15p 38.3% 80 CCO '13 P3 - LHC CCO 20p 23.4% 75 CCO '13 P4 - A Romantic Movie Outing CCO 20p 26.9% 26 CCO '13 P5 - Transforming Comets CCO 25p 19.4% 29 CCO '13 P6 - Repetitivity CCO 25p 36.0% 26 CCO '14 P1 - Troyangles CCO 10p 25.8% 117 CCO '14 P2 - King Gruff CCO 15p 39.9% 58 CCO '14 P3 - Werewolf CCO 25p 44.8% 37 CCO '14 P4 - Where's That Fuel? CCO 7p 26.2% 72 CCO '14 P5 - Early Exam Evacuation CCO 25p 22.2% 24 CCO '14 P6 - Gates CCO 40p 4.5% 7 CCO '15 P1 - Hungry Fox CCO 15p 19.8% 60 CCO '15 P2 - Artskjid CCO 15p 12.9% 92 CCO '15 P3 - Solar Flight CCO 30p 26.3% 8 CCO '15 P4 - Cars on Ice CCO 15p 21.6% 49 CCO '15 P5 - Timpanist CCO 20p 38.0% 28 CCO '15 P6 - Eggscavation CCO 30p 28.8% 11 « 1 2 3 4 5 6 7 8 ... 26 27 »