Problems

Problem search

Point range
Go Random

Hot problems

Problem Category ▴ Points AC % Users
LKP '18 Contest 2 P2 - Secret Signal Uncategorized 5 23.5% 134
A Coin Problem Uncategorized 12p 18.9% 297
Expected Value Uncategorized 15 24.5% 20
Creating a Sequence Uncategorized 3p 45.1% 100
LKP '18 Contest 2 P4 - The Zagonetka Machine Uncategorized 12p 13.9% 38
Maximum Product of K Integers Uncategorized 25 3.2% 2
Educational DP Contest AtCoder A - Frog 1 Uncategorized 7 46.0% 1177
Educational DP Contest AtCoder B - Frog 2 Uncategorized 7 43.0% 859
Educational DP Contest AtCoder D - Knapsack 1 Uncategorized 7 38.8% 1045
Educational DP Contest AtCoder E - Knapsack 2 Uncategorized 7 23.5% 626
Educational DP Contest AtCoder C - Vacation Uncategorized 7 59.6% 832
Deemo's Problem Uncategorized 15 13.6% 107
Educational DP Contest AtCoder F - LCS Uncategorized 7 34.9% 503
Educational DP Contest AtCoder H - Grid 1 Uncategorized 7 43.4% 661
Educational DP Contest AtCoder I - Coins Uncategorized 10 53.9% 353
Educational DP Contest AtCoder J - Sushi Uncategorized 12 55.3% 215
Educational DP Contest AtCoder K - Stones Uncategorized 10 53.1% 451
Educational DP Contest AtCoder L - Deque Uncategorized 10 54.7% 463
Educational DP Contest AtCoder M - Candies Uncategorized 12 34.3% 268
Educational DP Contest AtCoder N - Slimes Uncategorized 12 47.8% 407
Educational DP Contest AtCoder O - Matching Uncategorized 12 57.9% 328
Educational DP Contest AtCoder P - Independent Set Uncategorized 12 35.9% 313
Educational DP Contest AtCoder Q - Flowers Uncategorized 15 50.4% 278
Educational DP Contest AtCoder G - Longest Path Uncategorized 10 47.0% 462
Educational DP Contest AtCoder R - Walk Uncategorized 15 64.2% 137
Educational DP Contest AtCoder S - Digit Sum Uncategorized 12 32.0% 118
Valentine's Day '19 S3 - Mathematical English Uncategorized 12p 8.2% 39
Valentine's Day '19 J5 - Falling in Love Uncategorized 7p 13.9% 90
Valentine's Day '19 S2 - Ctudor's Cute Cacti Uncategorized 7p 19.3% 152
Valentine's Day '19 J4 - Flowers Uncategorized 5 18.4% 67
Valentine's Day '19 J1 - Rainbow Rating Uncategorized 3 39.3% 509
Valentine's Day '19 S4 - A Greedy Spouse Uncategorized 15p 11.1% 31
Valentine's Day '19 S1 - Voting Uncategorized 5p 22.8% 105
Valentine's Day '19 J3 - Love! Uncategorized 7p 27.5% 324
Valentine's Day '19 S5 - A Top Tree Problem Uncategorized 25p 9.7% 10
Valentine's Day '19 J2 - Pink! Uncategorized 3p 60.0% 543
Appleby Contest '19 P4 - Rectangles Uncategorized 7p 19.6% 201
Appleby Contest '19 P2 - The Love Letter Uncategorized 5p 29.3% 510
Appleby Contest '19 P5 - Matrix Operation Uncategorized 10p 32.6% 303
Appleby Contest '19 P3 - A Recursion Problem Uncategorized 5p 32.5% 257
Count The Triplets Uncategorized 7 10.5% 170
CPC '19 Contest 1 P0 - Shoes Uncategorized 3p 56.9% 263
CPC '19 Contest 1 P1 - Distance Uncategorized 3p 55.5% 339
A Combining Problem Uncategorized 20 14.8% 19
CPC '19 Contest 1 P3 - Admiral Kuznetsov Uncategorized 12p 15.5% 75
Not an Aho-Corasick Problem Uncategorized 20 10.0% 11
Expensive Chair Stacking Uncategorized 7p 36.3% 114
CPC '19 Contest 1 P2 - Luggage Uncategorized 7p 26.9% 324
Another Sorting Uncategorized 5p 36.1% 430
Palindromic Integer Partition Uncategorized 5p 34.1% 300