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list of classical problems


ID NAME QUALITY USERS ACC % DIFFICULTY C I
4141 Euler Totient Function   144 11453 38.44
8
11
4142 Ellipse   17 8.46
4154 IZBORI   36 24.54
4155 OTOCI   2 453 44.77
26
34
4156 PLAHTE   64 35.75
4160 A1 Road   86 50.46
4164 A conjecture of Paul ErdÅ‘s   23 2069 44.48
16
14
4166 Four colors   1 100 21.88
50
50
4168 Square-free integers   13 609 43.79
13
19
4172 Multiplicative digital root   1 73 25.40
4176 A Knightly Pursuit   2 63 27.56
26
17
4177 Herding   56 2698 35.21
14
15
4179 Temptation Island   2 648 44.85
20
12
4180 Pizza Location   2 571 18.49
31
17
4181 MELE3   19 609 42.59
20
21
4182 Candy (Again)   2 225 18.49
34
34
4185 Cube   52 35.93
4186 Break a New RSA system   1 137 35.76
4188 Amazing equality   38 13.58
4189 Landing   4 3.64
4191 Sky Code   12 607 27.11
19
26
4194 Another Lucky Numbers   4 136 33.45
17
13
4195 GCD Determinant   1 263 45.60
1
34
4197 Dominoes   4 119 22.89
23
23
4198 Lego   5 175 25.25
24
22
4200 Hamster flight   13 1149 45.39
5
13
4201 Coder Ratings   26 1384 35.98
15
18
4202 Brackets Parade   232 44.26
4203 Double Queue   1 75 43.50
17
17
4204 Showstopper   1 83 21.90
17
34
4206 Fast Maximum Matching   29 1951 29.17
22
19
4210 Fast Maximum Matching   10 41.94
4211 Fast Maximum Flow   16 22.22
4212 Another Longest Increasing Subsequence Problem   10 46.15
4225 Payment System   30 66.67
4226 Japan   30 1742 23.25
16
19
4227 "Shortest" pair of paths   3 205 39.46
23
17
4235 Wandering Queen   25 835 15.14
23
19
4259 Pilots   33 1601 31.74
17
20
4273 Train TimeTable   7 422 33.97
14
8
4278 Battlefield   5 45.83
4300 Rectangles   174 26594 49.92
5
8
4302 (K,N)-Knight   3 310 24.71
14
24
4303 Dice   13 924 15.74
11
19
4305 Drilling   3 96 17.98
17
34
4306 The way to Bytemountain   1 29 41.25
34
34
4307 Stamps   27 41.56
4308 Byteantean towns   55 24.78
4309 Circular game   32 19.89
4310 Permutacja   4 160 40.19
12
17

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