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list of classical problems


ID NAME QUALITY USERS ACC % DIFFICULTY C I
3912 Color a tree   1 274 30.48
17
34
3915 Star Polygon or Not   1 37 55.81
17
17
3920 Lucius Dungeon   17 1747 38.79
17
12
3921 The Great Ball   60 3937 39.11
7
11
3922 Mystical River   127 25.47
3923 Philosophers Stone   309 12758 43.49
10
11
3924 Filchs Dilemna   7 528 65.38
9
17
3926 Manhattan Wire   80 14.07
3927 Polygon on the Grid   22 36.62
3928 Counting Digits   7 1243 45.77
22
26
3929 Different Digits   72 22.17
3930 Group Partition   1 70 30.20
34
34
3931 Maximum Triangle Area   2 283 29.27
5
28
3932 Point Connection Game in a Circle   3 764 35.40
13
21
3933 Minimum Permutation   6 184 38.24
12
17
3934 Recaman’s Sequence   25 3532 53.86
9
6
3935 SHIFT Operator on Matrix   189 42.19
3936 Repair City Hall   4 243 50.33
5
1
3937 Wooden Sticks   9 679 36.92
23
28
3939 Search of Concatenated Strings   27 25.64
3940 Sum of Primes   3 234 63.69
9
9
3941 Kth Shortest Path   26 29.38
3942 Cleaning Robot   32 64.29
3943 Nested Dolls   31 1227 23.62
20
27
3944 Bee Walk   19 1434 56.39
12
15
3946 K-th Number   240 5556 34.99
25
27
3948 Polynomial Evaluation - Angry Teacher   -1 30 15.28
50
50
3953 Paid Roads   8 258 27.34
19
26
3961 Journey with Pigs   132 41.98
3962 ELEVATOR II   2 99 42.96
9
26
3964 Investment Money   15 619 25.69
16
17
3965 Minimax Triangulation   58 34.60
3969 M&M Game   12 1313 42.26
4
17
3970 Convert to Decimal Base System   53 38.60
17
17
3972 Stargates   46 13.51
3973 0 0 Pairs   4 806 27.34
15
15
3974 Another Tree Problem   7 646 32.53
17
23
3975 Most Servings Meal   8 353 26.30
28
28
3977 Police Query   8 296 17.30
27
30
3978 Distance Query   70 1814 32.84
24
21
3979 Whirligig number   8 1030 38.01
10
15
3980 Point Visible   1 49 32.22
34
50
3981 Shortest Regular Bracket   80 35.98
3982 String problem   7 604 48.91
9
23
3983 Right Triangle Counting   3 189 17.97
30
21
3999 FROGGER   3 99 27.24
28
23
4000 GALLUP   1 66 45.16
17
34
4003 Subway planning   42 18.45
4004 Exploding CPU   141 46.17
4008 Con Voi   9 57.69

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