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list of classical problems


ID NAME QUALITY USERS ACC % DIFFICULTY C I
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 2590 30.58
16
17
4110 Fast Maximum Flow   48 3061 34.31
25
22
4141 Euler Totient Function   147 12037 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 2692 43.78
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   13 778 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 2092 29.48
22
19
4210 Fast Maximum Matching   19 48.08
4211 Fast Maximum Flow   21 24.62
4212 Another Longest Increasing Subsequence Problem   14 42.50
4225 Payment System   31 61.90
4226 Japan   30 1803 23.39
16
19
4227 "Shortest" pair of paths   3 214 41.11
23
17
4235 Wandering Queen   26 869 14.98
24
19
4259 Pilots   34 1755 31.69
17
20
4273 Train TimeTable   7 426 34.14
14
8
4278 Battlefield   8 38.89
4300 Rectangles   176 27067 49.75
5
8
4302 (K,N)-Knight   3 315 25.20
14
24
4303 Dice   13 929 15.72
11
19

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