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list of classical problems


ID NAME QUALITY USERS ACC % DIFFICULTY C I
4034 Pizza Delivery   53 16.51
4035 NERED   2 395 57.76
9
13
4036 Cuckoo Hashing   3 152 27.39
17
6
4038 Counting The Way of Bracket Replacement   7 442 38.74
26
21
4052 Game   75 29.27
4053 Card Sorting   26 696 43.66
22
27
4060 A game with probability   210 22.15
4061 Polygon   4 215 31.41
21
17
4062 Rob Mini-Safe   114 39.46
4063 Sell Pigs   2 481 52.19
26
42
4069 Morphing is Fun   29 16.07
4070 Two Professors   104 14.10
4082 BLAST   30 1761 51.74
9
16
4083 Tele Broadcast   67 50.26
4097 Locomotive   35 37.89
4100 Sum of Vectors   -1 103 29.60
50
34
4103 Extend to Palindrome   44 2591 30.60
16
17
4110 Fast Maximum Flow   48 3063 34.32
25
22
4141 Euler Totient Function   147 12042 39.03
8
11
4142 Ellipse   21 9.46
4154 IZBORI   42 26.67
4155 OTOCI   2 512 45.42
26
34
4156 PLAHTE   69 35.77
4157 Domino   4 56 49.80
42
42
4160 A1 Road   89 50.90
4164 A conjecture of Paul ErdÅ‘s   25 2699 43.75
16
14
4166 Four colors   2 104 22.01
42
42
4168 Square-free integers   14 788 46.27
16
21
4176 A Knightly Pursuit   2 67 29.28
26
17
4177 Herding   57 2731 35.22
14
15
4179 Temptation Island   2 655 45.09
20
12
4180 Pizza Location   2 577 18.60
31
17
4181 MELE3   19 617 42.70
20
21
4182 Candy (Again)   2 236 18.78
34
34
4185 Cube   57 35.57
4186 Break a New RSA system   1 138 34.12
4188 Amazing equality   43 14.08
4189 Landing   1 8 4.08
50
50
4191 Sky Code   13 779 29.59
19
26
4194 Another Lucky Numbers   4 142 33.44
17
13
4195 GCD Determinant   1 273 45.30
1
34
4197 Dominoes   4 125 23.08
23
23
4198 Lego   5 195 25.35
24
22
4200 Hamster flight   13 1160 45.54
5
13
4201 Coder Ratings   26 1397 35.83
15
18
4202 Brackets Parade   238 45.03
4203 Double Queue   1 84 41.38
17
17
4204 Showstopper   1 89 22.45
17
34
4206 Fast Maximum Matching   33 2094 29.48
22
19
4210 Fast Maximum Matching   19 48.08

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