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list of classical problems


ID NAME QUALITY USERS ACC % DIFFICULTY C I
18469 Office Mates   1 51 31.70
17
34
18667 Product of factorials (hard)   3 42 26.61
28
34
19084 Huge Pascal triangle   1 30 43.82
9
34
19125 Hexadecimal value of Pi   2 32 56.59
26
34
19133 Base Conversion   1 9 15.60
50
34
19143 TRISQRS   169 38.02
28
34
19148 Kill them All   3 115 22.74
28
34
19150 Infinite Sequence   1 152 31.88
1
34
19154 Terrorist Attack   1 17 37.39
34
34
19224 Lights, Snakes and Cages   5 85 17.52
24
34
19382 Stock   2 94 32.07
26
34
19954 Travelling Knight 2   3 16 13.77
45
34
19985 GCD Extreme (hard)   2 281 35.06
26
34
19991 In case of failure   3 119 40.11
34
34
19996 Moon Safari (medium)   4 74 37.83
30
34
20170 Coloring Segments   5 88 20.64
31
34
20196 The Magical Bag   3 198 38.36
34
34
20562 Tracy and Charlie   1 42 56.47
17
34
20635 Dortmund Dilemma   1 19 44.44
17
34
20689 WA,RTE and Placements   1 22 39.20
34
34
20849 Interesting queries   2 44 36.32
34
34
20872 Counting Pairwise Coprime Triples   1 47 53.73
34
34
20930 Progression   4 26 8.84
34
34
21049 Under Construction Forever   1 15 44.44
17
34
21057 Super Lucky Palindromes   3 30 29.91
34
34
21132 Palindromes   1 95 34.44
17
34
21187 Increasing Shortest Path   2 30 18.78
26
34
21353 Avantgarde and Doughnut   5 19 45.90
21
34
21418 Interesting Game with Polygons   1 33 27.75
17
34
21597 The Hack   1 20 15.82
1
34
21635 Beautiful Mountains   1 16 39.68
17
34
21644 Walls   1 21 34.94
17
34
22037 Shortest Paths   1 20 13.97
1
34
22331 Intersection Query   1 13 17.21
50
34
22549 Divisors of factorial (extreme)   5 76 26.45
34
34
22554 Kingdom   1 37 43.75
34
34
22675 A conjecture of Paul ErdÅ‘s (hard)   2 4 5.56
34
34
22741 Another Valentine Maze Game (2D)   2 9 27.18
50
34
22774 Help Kejriwal   2 30 57.14
17
34
23350 Mineral Farm   16 23.97
34
34
23821 Magic Schools   1 23 24.81
34
34
24730 Magical colorful cats (hard)   1 12 29.03
34
34
25015 Subsequences with modulo   5 59 20.90
34
34
25338 Eefun Plays LOL   4 52 11.57
26
34
25471 AM FM   2 37 11.87
17
34
25476 Induced favoritism   1 40 28.87
17
34
25482 Kimetto Kipsang and Kipchoge   1 40 20.29
34
34
25819 DOMINO   1 17 28.87
34
34
26017 GCD OF MATRIX   2 273 39.52
23
34
26073 Counting Divisors   3 121 24.86
39
34

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