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 TLE TSOC Uncategorized VM7WC GoRandom Hot problems Piggy CCC '08 S3 - Maze DMPG '15 S5 - Black and White Stalactites Python Infinite Loop DMOPC '16 Contest 3 P5 - Shoe Shopping II Next Prime « 1 2 3 4 5 6 ... 24 25 » Problem Category Points ▾ AC % Users Terminus Est Uncategorized 50p 7.0% 30 IOI '16 P6 - Aliens IOI 50p 10.6% 13 Kongou Mock CCC 50p 4.1% 9 CCCJQR P6 Seasonal 50 0.0% 0 UTS Open '15 #6 - Tetrahedra Uncategorized 40p 7.3% 9 Akame Uncategorized 40p 0.4% 48 IOI '15 P6 - Towns IOI 40p 27.7% 20 IOI '14 P6 - Holiday IOI 40 16.4% 14 IOI '13 P3 - Wombats IOI 40p 17.6% 6 IOI '16 P2 - Railroads IOI 40p 40.1% 19 IOI '16 P3 - Shortcut IOI 40p 1.3% 13 IOI '13 P6 - Game IOI 40p 2.7% 11 COCI '14 Contest 5 #6 Divljak COCI 40p 9.0% 9 Fox Socks FHC 40 40.0% 4 Fox Rocks FHC 40p 40.8% 4 Mine and Tree Seasonal 40p 16.6% 42 JOI '14 - Space Pirate JOI 40p 0.0% 1 CCO '14 - Gates CCO 40p 4.6% 7 CCO Preparation Test 3 - Primitive Pythagorean Pairs CCO 40p 12.9% 23 CCO Preparation Test 3 - Arrow CCO 40p 16.1% 47 Dynamic MST CCO 40p 7.1% 10 IOI '15 P3 - Teams IOI 35p 8.5% 12 COCI '08 Contest 2 #6 Cavli COCI 35p 7.1% 2 TLE '16 Contest 2 P6 - The Great Search TLE 35p 27.2% 9 Bubble Cup V9 A Cowboy Beblop at his computer Bubble Cup 35 0.0% 0 A Times B Fun Math 30p 2.3% 126 Phantom's Python Challenge Fun Math 30p 14.7% 14 Matrix Determinant Fun Math 30p 17.8% 56 Fast Factorial Calculator 2 Fun Math 30p 1.2% 25 Esdeath Uncategorized 30p 14.2% 47 NO ACM NO LIFE Uncategorized 30p 15.2% 17 IOI '14 P1 - Rail IOI 30p 11.8% 36 IOI '14 P5 - Friend IOI 30p 20.0% 14 DMOPC '14 Contest 5 P5 - Aircraft Carrier Akagi DMOPC 30p 53.2% 14 DMPG '15 G3 - Kinako Bread 2 DMOPC 30p 12.7% 22 DMOPC '15 Contest 3 P6 - Gala DMOPC 30p 11.6% 22 DMPG '16 G6 - SAO Queries DMOPC 30p 5.0% 17 COCI '14 Contest 3 #6 Kamioni COCI 30p 32.1% 8 COCI '14 Contest 7 #6 Police COCI 30p 14.3% 9 COI '06 #2 Policija COCI 30p 0.0% 0 COCI '06 Contest 6 #6 Prostor COCI 30p 44.4% 4 COCI '07 Contest 5 #6 Baza COCI 30 13.6% 3 COI '07 #4 Umnozak COCI 30p 12.5% 2 IOIQR P6 - Games Seasonal 30p 0.0% 10 JOI '14 - Factories JOI 30p 7.1% 14 CCO '07 P4 - Gerrymandering CCO 30p 0.4% 21 CCO '15 - Eggscavation CCO 30p 28.8% 11 CCO '16 P3 - Legends CCO 30p 14.1% 30 CCO '17 P3 - Vera and Modern Art CCO 30p 6.0% 33 CCO '17 P6 - Shifty Grid CCO 30p 8.9% 19 « 1 2 3 4 5 6 ... 24 25 »