list of classical problems


ID NAME QUALITY USERS ACC % DIFFICULTY C I
1787 Run Length Encoding   7 857 19.62
15
4
3379 String Shuffle   7 394 65.92
17
14
3638 Word Counting   7 2629 21.07
10
6
3639 Lucky Numbers   7 729 34.10
13
9
3791 Street   7 662 51.56
9
12
3866 Finding Palindromes   7 246 19.43
19
23
3924 Filchs Dilemna   7 522 65.40
9
17
3928 Counting Digits   7 1162 44.89
22
26
3974 Another Tree Problem   7 645 32.53
17
23
3979 Whirligig number   7 1024 37.95
10
15
3982 String problem   7 604 48.95
9
23
4038 Counting The Way of Bracket Replacement   7 437 38.79
26
21
4273 Train TimeTable   7 422 33.97
14
8
4483 Roads Repair   7 180 32.64
20
23
4485 MobiZone vs VinaGone   7 322 33.31
17
31
5091 Feline Olympics - Mouseball   7 593 39.14
7
15
5107 Playing with Marbles   7 787 23.59
12
8
5301 Query Problem   7 675 37.32
16
22
6172 OAE   7 1159 41.30
12
26
6290 Robbery 2   7 799 32.79
17
13
6489 Finding the Kth Prime (Hard)   7 82 10.08
42
36
6517 Farmer Sepp   7 331 21.92
28
26
6828 Lineup   7 693 32.26
11
9
7132 Headshot   7 1393 37.21
8
14
7264 Digital LED Number   7 533 28.87
14
4
7422 Escape from Jail Again   7 436 42.16
30
32
7741 Sequence   7 802 30.25
11
23
7976 Sum the Square   7 544 25.99
12
15
8495 Maximum Subset of Array   7 729 27.80
19
17
8796 Cubist Artwork   7 646 68.33
7
9
8916 Villages by the River   7 271 23.78
13
20
8917 How Many Plusses   7 176 31.94
11
14
9458 Ghosts having fun   7 205 11.74
16
23
9569 Sum of Pairwise Products   7 827 31.37
6
13
9570 Counting binary strings   7 338 53.04
17
24
10050 Power Tower City   7 115 69.03
26
29
10145 Birthday Cake   7 255 36.41
12
12
10334 SOLDIERS   7 747 28.47
8
8
10522 K12-OE Numbers   7 229 49.24
21
21
10575 The Yellow Brick Road   7 1271 49.38
8
5
11895 DONALDO   7 507 24.83
11
13
12295 Smallest Inverse Euler Totient Function   7 214 22.97
21
17
12363 Red And Green   7 249 39.68
8
14
12407 Johnny The Gambler   7 952 20.62
8
6
12462 Boggle Scoring   7 537 47.96
5
5
12734 Seating Arrangement   7 159 60.98
6
15
13469 FOREVER ALONE   7 91 39.43
24
24
13523 Card Meets (medium)   7 54 32.49
17
21
13626 Charu and Coin Distribution   7 413 41.16
10
20
13768 An Experiment by Penny   7 603 59.67
8
14

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