Problems

Problem search

Point range
Go Random

Hot problems

Problem Category Points AC % Users
Mock CCC '18 Contest 1 J5/S3 - A Simulation Problem Mock CCC 7p 21.6% 122
Mock CCC '18 Contest 1 S4 - A Graph Problem Mock CCC 12p 19.9% 97
Mock CCC '18 Contest 1 S5 - A Palindrome Problem Mock CCC 15p 8.1% 17
Mock CCC '18 Contest 2 J1 - An Arithmetic Problem Mock CCC 3p 50.9% 417
Mock CCC '18 Contest 2 J2 - A Software Engineering Task Mock CCC 3p 35.0% 147
Mock CCC '18 Contest 2 J3/S1 - An Array Problem Mock CCC 7p 16.1% 371
Mock CCC '18 Contest 2 J4/S2 - A Geometry Problem Mock CCC 7p 17.5% 122
Mock CCC '18 Contest 2 J5/S3 - A Coloring Problem Mock CCC 10p 19.3% 56
Mock CCC '18 Contest 2 S4 - A Tree Problem Mock CCC 12p 16.7% 60
Mock CCC '18 Contest 2 S5 - A Link/Cut Tree Problem Mock CCC 15p 23.1% 89
Mock CCC '18 Contest 3 J1 - A Sum Problem Mock CCC 3p 61.3% 599
Mock CCC '18 Contest 3 J2 - A Palindrome Problem Mock CCC 3p 24.1% 240
Mock CCC '18 Contest 3 J3/S1 - A String Problem Mock CCC 5p 36.0% 352
Mock CCC '18 Contest 3 J4/S2 - A Median Problem Mock CCC 5p 36.7% 479
Mock CCC '18 Contest 3 J5/S3 - A Cookie-Cutter Problem Mock CCC 10p 10.0% 59
Mock CCC '18 Contest 3 S4 - A Graph Problem Mock CCC 10 25.7% 213
Mock CCC '18 Contest 3 S5 - A Rage Tree Problem Mock CCC 20p 11.2% 46
Mock CCC '18 Contest 5 J1 - Looking for the CCC Mock CCC 3p 44.7% 567
Mock CCC '18 Contest 5 J2 - Smallest Mode Mock CCC 3p 26.2% 226
Mock CCC '18 Contest 5 J3/S1 - Median Triples Mock CCC 5p 29.4% 235
Mock CCC '18 Contest 5 J4/S2 - Reverse Sort Mock CCC 5p 44.4% 261
Mock CCC '18 Contest 5 J5/S3 - Directed Graph Connectivity Mock CCC 7p 40.8% 486
Mock CCC '18 Contest 5 S4 - Sparse Binary String Counting Mock CCC 10p 18.3% 92
Mock CCC '18 Contest 5 S5 - California Boggle Mock CCC 20p 10.4% 34
Mock CCC '19 Contest 1 J1 - Pusheen's Report Card Mock CCC 3p 36.5% 954
Mock CCC '19 Contest 1 J2 - Pusheen OCR Mock CCC 3p 54.7% 715
Mock CCC '19 Contest 1 J3 - Pusheen Eats Tuna Sashimi and Tuna Nigiri Mock CCC 3p 18.5% 341
Mock CCC '19 Contest 1 J4 - Pusheen Plays Neko Atsume Mock CCC 3p 18.5% 295
Mock CCC '19 Contest 1 J5 - Pusheen Designs a Sushi Boat Mock CCC 7p 17.1% 235
Mock CCC '19 Contest 1 S1 - Pusheen's Report Card Mock CCC 3p 41.2% 628
Mock CCC '19 Contest 1 S2 - Pusheen's Puzzle Present Mock CCC 5p 26.8% 369
Mock CCC '19 Contest 1 S3 - Pusheen Eats Tuna Sashimi and Tuna Nigiri Mock CCC 12p 5.2% 54
Mock CCC '19 Contest 1 S4 - Pusheen Plays Neko Atsume Mock CCC 12 17.8% 100
Mock CCC '19 Contest 1 S5 - Pusheen Eats Even More Tuna Sashimi and Tuna Nigiri Mock CCC 20 2.3% 9
Mock CCC '19 Contest 2 J1 - Tudor Drinks Some Tea Mock CCC 3p 51.9% 748
Mock CCC '19 Contest 2 J2 - Tudor Drinks Some More Tea Mock CCC 3p 28.2% 375
Mock CCC '19 Contest 2 J3 - Tudor Buys Some Tea Mock CCC 3p 17.4% 298
Mock CCC '19 Contest 2 J4 - Tudor Buys Some Cheesecake Mock CCC 3p 20.2% 274
Mock CCC '19 Contest 2 J5 - Tudor Drinks Even More Tea Mock CCC 10p 7.4% 35
Mock CCC '19 Contest 2 S1 - Tudor's Double Doors Mock CCC 3p 10.8% 225
Mock CCC '19 Contest 2 S2 - Tudor Puts A Goat On A Rope Mock CCC 3p 29.4% 214
Mock CCC '19 Contest 2 S3 - Tudor Tallies Triangular Totals Mock CCC 10p 5.4% 62
Mock CCC '19 Contest 2 S4 - Tudor Walks Among the Goats Mock CCC 25p 6.8% 8
Mock CCC '19 Contest 2 S5 - Tudor Takes Pictures of Goats Mock CCC 15 6.8% 14
Mock CCC '21 S1 - Edit Distance Mock CCC 5p 35.0% 346
Mock CCC '21 S2 - Colorful Strings Mock CCC 7p 18.1% 219
Mock CCC '21 S3 - Lexicographically Smallest Permutation Subsequence Mock CCC 10p 8.4% 80
Mock CCC '21 S4 - Infinite Molecule Mock CCC 12p 8.2% 29
Mock CCC '21 S5 - Clique and Independent Set Mock CCC 25p 18.3% 11
Mock CCC '22 1 S1 - Big Mattress Tournament Mock CCC 5p 13.4% 206