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list of classical problems (unsolved)


ID NAME QUALITY USERS ACC % DIFFICULTY C I
3734 Periodni   2 670 39.19
26
34
3896 Maximal Independent Set   2 61 25.19
34
42
3897 Convex Polygons   2 124 30.86
17
34
3909 CALCULATE POW(2004,X) MOD 29   2 279 56.70
1
17
3931 Maximum Triangle Area   2 283 29.27
5
28
3962 ELEVATOR II   2 101 43.31
9
26
4035 NERED   2 395 57.76
9
13
4063 Sell Pigs   2 481 52.19
26
42
4155 OTOCI   2 512 45.42
26
34
4166 Four colors   2 104 22.01
42
42
4176 A Knightly Pursuit   2 67 28.92
26
17
4179 Temptation Island   2 655 45.09
20
12
4180 Pizza Location   2 577 18.60
31
17
4182 Candy (Again)   2 236 18.78
34
34
4390 Cards shuffing   2 123 27.18
26
21
4429 Spelling Lists   2 194 32.41
17
34
4456 Jumbo Airlines   2 76 36.79
34
34
4458 Rainbow   2 38 19.53
34
42
4491 Primes in GCD Table   2 862 36.88
17
26
4532 String reduction   2 169 16.71
17
30
4546 Tobo or not Tobo   2 268 19.47
26
26
4555 Einbahnstrasse   2 490 26.56
22
9
4761 Strategy game   2 44 55.64
9
17
4871 Bridge   2 161 24.59
1
34
5152 Brute-force Algorithm EXTREME   2 103 22.25
17
28
5294 Recurrence   2 262 14.44
28
17
5317 Tetravex Puzzle   2 284 46.25
23
6
5452 Hop Do not Walk   2 148 35.23
17
17
5453 Air Strike   2 178 23.78
17
17
5463 Bird or not bird   2 119 38.48
1
17
5530 Math with Bases (Easy)   2 67 24.73
26
9
5673 Fractions on Tree ( reloaded !)   2 248 38.33
26
34
5703 Primes of Lambda   2 25 26.79
42
42
5725 123 Sequence   2 124 24.09
1
1
5833 XOR Rounds   2 360 30.83
9
13
5885 Troops of Sand Monsters   2 115 17.56
17
17
5975 Travelling Knight   2 54 32.69
34
34
6169 Standing Sequence   2 122 28.60
34
39
6356 Rock-Paper-Scissors-Lizard-Spock   2 178 42.29
12
23
6478 Hamster Flight 2   2 69 33.61
17
34
6576 Divide and Conquer   2 62 16.51
17
26
6622 Islands and Hotel Chains   2 66 9.68
45
34
6665 Easy Longest Common Substring   2 149 23.11
23
17
6692 B - Esperanto Lessons   2 69 64.80
17
26
6700 Make it Smooth   2 73 20.68
17
17
6731 Coeficientes   2 1261 50.11
10
9
6803 Absurd prices   2 388 23.82
12
12
6829 Polynomial   2 194 30.39
17
17
6893 Power Sums   2 107 57.01
26
28
6906 Raining Parabolas   2 257 21.65
26
26

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