list of classical problems


ID NAME QUALITY USERS ACC % DIFFICULTY C I
58 Crime at Piccadily Circus   3 651 14.03
31
21
7753 Happy Numbers II   3 651 15.95
23
17
2826 Round-Robin Scheduling   12 650 36.17
23
22
14961 Maximum Girth   649 55.56
17
26
688 Toy Cars   2 647 18.52
12
20
3974 Another Tree Problem   7 647 32.53
15
23
10606 Balanced Numbers   9 647 29.11
23
17
14887 Good Travels   30 647 29.33
26
24
26346 STUNNING GCD   10 646 37.25
1
8
9503 Working in Beijing   3 645 49.07
6
6
25844 Find the max XOR value   7 645 59.58
6
16
32724 nth number   4 644 24.63
12
11
7881 Ljutnja   3 641 24.32
34
21
7704 Civil Engineering   1 640 44.59
9
26
12326 Dating Rishi   8 637 36.27
17
26
5196 Monotonous numbers   6 635 48.16
4
34
8467 GRADE POINT AVERAGE   2 634 30.08
8
3
16185 Mining your own business   4 633 20.86
34
34
8624 Nim-B Sum   -1 631 61.46
9
17
18176 FRIENDSHIP!!!   16 631 26.94
15
21
28307 Ada and Game   54 630 31.59
14
19
7188 Escape from Jail   12 629 30.98
18
23
27303 Count Doubles   3 629 34.48
7
5
6562 Esferas   11 628 61.00
9
26
30735 Ada and Island   18 628 34.71
13
12
3964 Investment Money   15 627 25.73
16
17
3387 Changing Maze   13 626 29.79
19
9
13868 Roads of NITT   43 625 29.39
24
24
9040 Tug of War   12 623 25.80
9
21
7826 Tree Isomorphism   10 621 23.64
19
27
8349 BRODOVI   6 620 43.77
21
17
14856 Crazy Shopkeeper   2 620 33.09
17
8
34910 Easy Math   2 620 18.42
2
4
744 Longest Permutation   3 619 19.85
15
19
13117 White Hats   9 618 37.56
4
14
17804 Gopu And Palindromes   8 618 58.93
3
4
23925 Vitaliy and Pie   12 618 42.21
10
7
4181 MELE3   19 617 42.70
20
21
9650 Mega Inversions   12 617 42.94
11
18
27269 Cube Numbers   29 615 30.99
9
11
3713 Primitive Root   6 614 30.62
15
27
4941 Integer Factorization (20 digits)   8 614 55.37
34
30
2136 Candy II   2 613 46.00
17
17
12005 Grass Planting   11 613 45.42
29
19
264 Corporative Network   14 612 25.41
17
19
7875 Miles and kilometers   6 612 47.06
9
9
3544 Binary Search Tree   6 611 21.01
11
20
13745 Crack the Safe   19 610 53.22
14
13
3982 String problem   7 608 48.82
9
23
13768 An Experiment by Penny   8 607 59.70
6
15

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