list of classical problems


ID NAME QUALITY USERS ACC % DIFFICULTY C I
676 Sorting is not easy   9 536 39.66
19
32
7422 Escape from Jail Again   7 429 41.92
30
32
9842 Yet Another Fancy Game   6 236 22.91
7
32
31893 Fibonacci and Easy GCD   7 60 26.76
23
32
32079 Ada and Greenflies   8 112 46.18
13
32
10628 Count on a tree   63 2366 17.00
32
31
286 Selfish Cities   1 697 39.03
31
31
4485 MobiZone vs VinaGone   7 318 33.19
17
31
10570 Longest Common Substring   4 770 28.82
31
31
741 Steady Cow Assignment   5 471 31.09
20
31
8425 Coloring Trees   10 320 30.30
20
31
21643 Unhappy Numbers   6 45 36.75
31
31
30759 Ada and Species   8 97 25.96
26
31
5652 Snow White and the N dwarfs   31 881 21.80
21
31
10707 Count on a tree II   63 2921 18.77
31
31
34254 Huseyn and his game   14 109 29.05
6
31
10264 Meteors   42 1311 27.49
26
31
3380 Tourist   28 1051 38.55
19
31
300 Cable TV Network   2 635 35.88
24
30
1461 Greedy Hydra   3 193 33.50
27
30
3977 Police Query   8 291 17.08
27
30
4941 Integer Factorization (20 digits)   8 554 55.84
34
30
7002 Buildings   5 75 37.35
21
30
8747 Substrings II   6 145 10.58
34
30
12125 Fibonacci With a Square Root   8 148 33.31
30
30
12943 Counting   5 79 47.71
8
30
13529 Special Graph   4 79 12.21
37
30
18457 Very Friends   6 242 27.74
11
30
23969 Helping Jar Jar Binks   5 77 21.28
27
30
34865 Scary Secret Diary   5 19 36.36
21
30
37390 Colored Development   5 26 38.16
21
30
40084 Just Primes II   7 21 35.71
34
30
2005 Minus Operation   8 304 33.25
30
30
2939 Query on a tree V   75 1751 27.86
29
30
10477 GM plants   16 340 29.10
25
30
14923 King Graffs Defense   20 435 25.65
26
30
15086 Land Acquisition   37 1317 28.43
24
30
735 Minimum Diameter Spanning Tree   1 182 33.93
17
30
1785 Code   2 220 25.65
26
30
3576 Boy Scouts   3 142 28.57
21
30
3723 Snooker   4 443 50.05
12
30
4532 String reduction   2 166 16.62
17
30
5271 A Coin Game   4 511 30.73
21
30
7296 Trees Again   5 166 50.53
21
30
8073 The area of the union of circles   1 441 20.50
38
30
8910 Probablistic OR   2 172 58.36
17
30
10649 Mirror Number   5 168 21.29
13
30
10677 Joseph’s Problem   4 153 49.88
17
30
12324 Tiles   3 96 21.55
21
30
12981 Fences   3 31 24.28
26
30

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