Problems

Problem search

Point range
Go Random

Hot problems

Problem Category Points AC % ▴ Users
Educational DP Contest AtCoder D - Knapsack 1 Uncategorized 7 38.7% 1038
Educational DP Contest AtCoder E - Knapsack 2 Uncategorized 7 23.5% 623
Educational DP Contest AtCoder C - Vacation Uncategorized 7 59.9% 826
Deemo's Problem Uncategorized 15 13.6% 107
Educational DP Contest AtCoder F - LCS Uncategorized 7 34.8% 499
Educational DP Contest AtCoder H - Grid 1 Uncategorized 7 43.4% 659
Educational DP Contest AtCoder I - Coins Uncategorized 10 53.9% 346
Educational DP Contest AtCoder J - Sushi Uncategorized 12 55.2% 213
Educational DP Contest AtCoder K - Stones Uncategorized 10 54.0% 443
Educational DP Contest AtCoder L - Deque Uncategorized 10 55.1% 458
Educational DP Contest AtCoder M - Candies Uncategorized 12 34.2% 266
Educational DP Contest AtCoder N - Slimes Uncategorized 12 47.8% 402
Educational DP Contest AtCoder O - Matching Uncategorized 12 57.8% 326
Educational DP Contest AtCoder P - Independent Set Uncategorized 12 35.9% 311
Educational DP Contest AtCoder Q - Flowers Uncategorized 15 50.3% 276
Educational DP Contest AtCoder G - Longest Path Uncategorized 10 47.8% 452
Educational DP Contest AtCoder R - Walk Uncategorized 15 63.8% 134
Educational DP Contest AtCoder S - Digit Sum Uncategorized 12 31.6% 114
Appleby Contest '19 P4 - Rectangles Uncategorized 7p 19.6% 201
Appleby Contest '19 P2 - The Love Letter Uncategorized 5p 29.3% 510
Mock CCC '20 S2 - Flipper Redux Mock CCC 7p 26.5% 280
Appleby Contest '19 P5 - Matrix Operation Uncategorized 10p 33.0% 283
CTU Open Contest 2018 - Horsemeet ICPC 10 71.9% 13
CTU Open Contest 2018 - Rullete ICPC 10 19.4% 10
TLE 2018-19 P2 - Willson and Trivial Problem Seasonal 0 51.7% 392
TLE 2018-19 P3 - Feedback Survey Seasonal 0p 53.0% 226
TLE 2018-19 P5 - Pure Functional Programming Seasonal 40p 2.3% 4
CCO '96 P1 - Train Swapping CCO 5 26.9% 212
CCO '96 P2 - SafeBreaker CCO 10 36.2% 89
CCO '96 P3 - Quadtrees CCO 15 48.4% 84
CCO '96 P4 - Where's Waldorf? CCO 7 47.2% 81
CCO '96 P5 - All Roads Lead Where? CCO 7 62.6% 271
CCO '96 P6 - Hoppers CCO 15 15.5% 29
CERC '00 H - Hotline ICPC 25 15.1% 43
CCC '19 S4 - Tourism CCC 20p 7.7% 248
CCC '19 J1 - Winning Score CCC 3 50.8% 6995
CCC '19 J2 - Time to Decompress CCC 3 52.4% 3321
CCC '19 J3 - Cold Compress CCC 5 46.2% 3154
CCC '19 J5 - Rule of Three CCC 20p 0.7% 7
Count The Triplets Uncategorized 7 10.5% 170
DS '19 Day 1 P1 - Arithmetic Square Seasonal 20p 5.4% 1
DS '19 Day 2 P3 Inaho C Seasonal 35p 13.9% 6
COCI '18 Contest 1 #2 Zamjena COCI 7p 23.3% 41
A Combining Problem Uncategorized 20 14.8% 19
All Pairs Shortest Path Classics 20p 8.7% 6
Not an Aho-Corasick Problem Uncategorized 20 10.0% 11
Another Sorting Uncategorized 5p 36.1% 429
Palindromic Integer Partition Uncategorized 5p 34.1% 300
The Return of A Plus B Seasonal 0p 14.2% 341
Fast Bit Duplication Uncategorized 10 32.3% 48