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 Python Infinite Loop CCC '16 S2 - Tandem Bicycle CCC '14 S1 - Party Invitation Lexicographically Least Substring Back To School '17: Physics CCC '14 S3 - The Geneva Confection « 1 2 3 4 5 6 ... 26 27 » Problem Category Points ▾ AC % Users Terminus Est Uncategorized 50p 7.2% 32 IOI '16 P6 - Aliens IOI 50p 9.7% 16 Kongou Mock CCC 50p 3.5% 10 CCCJQR P6 Seasonal 50 0.0% 0 UTS Open '15 #6 - Tetrahedra Uncategorized 40p 7.3% 9 Akame Uncategorized 40p 0.4% 49 IOI '15 P6 - Towns IOI 40p 27.8% 21 IOI '14 P6 - Holiday IOI 40 16.5% 15 IOI '13 P3 - Wombats IOI 40p 18.1% 8 IOI '16 P2 - Railroads IOI 40p 40.7% 20 IOI '16 P3 - Shortcut IOI 40p 3.0% 15 IOI '13 P6 - Game IOI 40p 3.5% 13 COCI '14 Contest 5 #6 Divljak COCI 40p 26.6% 13 Fox Socks FHC 40 40.0% 4 Fox Rocks FHC 40p 40.8% 4 Mine and Tree Seasonal 40p 15.9% 42 JOI '14 - Space Pirate JOI 40p 0.0% 1 CCO '11 P5 - Fixing Disks CCO 40p 0.0% 1 CCO '14 P6 - Gates CCO 40p 4.6% 7 CCO Preparation Test 3 - Primitive Pythagorean Pairs CCO 40p 13.4% 24 CCO Preparation Test 3 - Arrow CCO 40p 16.5% 48 Dynamic MST CCO 40p 9.1% 12 APIO '16 P2 - Fireworks APIO 40p 33.3% 3 IOI '15 P3 - Teams IOI 35p 9.8% 14 COCI '08 Contest 2 #6 Cavli COCI 35p 10.0% 3 Back to School '17: Big Integer Seasonal 35p 1.7% 43 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 2.8% 137 Phantom's Python Challenge Fun Math 30p 13.6% 14 Matrix Determinant Fun Math 30p 17.1% 60 Fast Factorial Calculator 2 Fun Math 30p 1.3% 31 Esdeath Uncategorized 30p 14.1% 49 NO ACM NO LIFE Uncategorized 30p 15.2% 17 IOI '14 P1 - Rail IOI 30p 11.6% 37 IOI '14 P5 - Friend IOI 30p 20.0% 14 DMOPC '14 Contest 5 P5 - Aircraft Carrier Akagi DMOPC 30p 53.5% 14 DMPG '15 G3 - Kinako Bread 2 DMOPC 30p 16.5% 24 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 13.8% 10 COI '06 #2 Policija COCI 30p 40.0% 13 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 9.1% 3 COCI '08 Contest 4 #5 Trezor COCI 30p 0.0% 0 COCI '08 Contest 4 #6 Periodni COCI 30p 0.0% 0 COCI '08 Contest 6 #6 Slicice COCI 30p 90.5% 6 IOIQR P6 - Games Seasonal 30p 0.0% 10 « 1 2 3 4 5 6 ... 26 27 »