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list of classical problems


ID NAME QUALITY USERS ACC % DIFFICULTY C I
199 Empty Cuboids   -1 142 34.74
598 Increasing Subsequences   142 34.21
34
34
2009 Cryptography   1 142 4.80
1
34
3576 Boy Scouts   3 142 28.57
21
30
13090 New Strategy   3 142 33.38
9
9
19174 Khairy and Gold Alloys   7 142 46.91
11
11
23541 CWC-2015   8 142 17.93
17
17
36667 Solution to all the problems   13 142 20.91
15
11
2879 The Cow Doctor   141 37.24
17
4004 Exploding CPU   141 46.17
11986 ROMAN NUMERALS   1 141 33.27
9
9
21175 Rush hour   141 41.35
25892 Palindrome in a Tree   7 141 35.49
17
13
27497 Binary Protean Number   5 141 45.52
14
15
1421 Goods   140 30.65
8421 Fun With Inequalities   140 38.05
17
17
10415 Dracula   6 140 21.71
20
22
13545 Room Change   1 140 37.70
17
17
24258 Fata7y Ya Warda!   14 140 34.07
20
17
28451 Ada and Cities   10 140 26.42
19
17
33017 Ada and Mold   12 140 34.77
20
33
228 Shamans   139 20.66
9
9
869 Galactic Import   3 139 45.56
6
6
4657 Gas Wars   139 35.32
34
17
8058 Soccer Teams   1 139 25.22
17
26
9334 Point in tetrahedron   2 139 57.37
9
17
12001 Bit by Bit   2 139 36.43
17
23
26743 Wonowon   6 139 67.02
11
11
30922 Ada and Plum   12 139 46.53
24
24
34682 Good Elements   10 139 29.08
6
5
699 Huge Knap Sack   1 138 24.89
17
17
3376 Parking Lot   1 138 20.05
17
17
8129 Sky Lift   2 138 25.49
24
19
13738 Happy Valentine Day (Valentine Maze Game)   3 138 36.42
28
23
21642 Tsunami   3 138 41.96
28
23
4186 Break a New RSA system   1 137 35.76
4194 Another Lucky Numbers   4 137 33.56
17
13
4552 Adding up Triangles   137 36.30
7934 Operating System Problems (Task Scheduling)   2 137 56.53
17
17
10464 Reverse Engineering   4 137 48.53
17
28
11564 E 23 Stairs pattern   1 137 39.39
17
23
21172 Erdos et al   3 137 36.45
26
26
26695 Atul and Aastha Chronicles 2   137 36.67
11
9
32257 Apoorv and Math problem   11 137 15.65
29
16
186 The lightest language   1 136 24.64
17
34
9934 Alice and Bob   1 136 32.61
1
34
18966 Vacation Planning   3 136 25.67
17
17
19146 Glorious Gamblers   -1 136 56.86
23
26
24772 Manipulate Dwarfs   5 136 30.40
20
20
34012 Adrita and Her Bike Ride   8 136 32.08
10
8

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