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list of classical problems


ID NAME QUALITY USERS ACC % DIFFICULTY C I
913 Query on a tree II   115 4367 20.68
24
21
3579 Disjoint Paths   4 311 20.67
24
27
8795 Twenty Questions   1 40 20.65
5972 Maximum Sum Sequences   14 1140 20.64
15
18
31 Fast Multiplication   48 8616 20.64
15
12
3544 Binary Search Tree   6 587 20.63
11
20
1466 Blue Mary Needs Help Again   4 202 20.61
28
34
12407 Johnny The Gambler   7 951 20.61
8
6
28009 Balance the parentheses   17 20.59
16030 Psycho   13 822 20.57
10
11
13167 Totient in permutation (hard)   7 20.57
348 Expedition   58 2192 20.45
20
20
33773 Ada and Dahlia   3 22 20.43
26
17
25784 Bubble Sort   10 627 20.40
16
17
6296 Experiment   26 20.39
215 Panic in the Plazas   82 20.39
34
34
8073 The area of the union of circles   1 438 20.38
38
30
27520 Laser   5 38 20.37
17
17
19274 Operators   17 586 20.32
14
20
34975 Prime Friendly Numbers   9 38 20.32
27
24
85 Dice Contest   41 20.32
34
34
3488 The Top-Code   1 55 20.32
17
34
32446 Sanvi and Magical Numbers   9 20.29
20170 Coloring Segments   4 86 20.27
30
34
11848 Power with Combinatorics   8 431 20.26
25
37
10440 Friends   32 20.25
9505 Distinct Subtrees   1 17 20.24
17
17
14387 Science   13 20.24
17396 Dazzling Pearls   16 20.22
50
17
8099 Crash´s number table   102 20.22
27198 Ballons Revisited   4 92 20.22
1
23
37475 Base Exploration   5 81 20.21
9
12
12866 Nlogonian Tickets   12 263 20.20
25
24
25214 Ohani And The Game   77 20.19
11
8
2963 Painting Blocks (Act II)   1 55 20.19
17
34
5902 Tri   1 76 20.17
34
50
8725 Closest Point Pair   31 1843 20.17
19
21
25889 Drawing Lines   3 31 20.16
23
17
3110 Palindromic Number   3 94 20.15
9
17
21572 Marble & store   2 118 20.10
14
14
19037 Magical colorful cats (easy)   20 20.10
417 The lazy programmer   9 645 20.09
21
23
25482 Kimetto Kipsang and Kipchoge   1 39 20.07
34
34
3376 Parking Lot   1 138 20.05
17
17
412 K-path cover   181 20.04
1
50
729 Move your armies   77 20.04
861 Counting inversions   6 458 20.04
34
28
681 Building the Tower   2 97 20.03
26
17
11391 EASY MATH   24 1297 20.02
20
18
3197 Tree Construction   62 20.00

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