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list of classical problems (unsolved)


ID NAME QUALITY USERS ACC % DIFFICULTY C I
9185 TORNJEVI   10 224 33.41
26
26
3868 Total Flow   11 1398 36.29
14
13
12914 Totient Extreme   45 1805 40.25
8
12
11998 Totient Fever   72 43.66
11474 Totient Game   46 37.65
13165 Totient in permutation (easy)   11 309 20.77
17
17
13167 Totient in permutation (hard)   7 11.79
13166 Totient in permutation (medium)   21 49.44
17
34
18937 Touch of Venom   21 1406 23.29
11
13
2060 Tough Water Level   36 18.21
239 Tour de Byteland   1 91 24.45
17
17
3380 Tourist   28 1170 37.79
19
31
15074 Tourney   4 149 36.87
13
9
18522 Tours   26 21.76
42
26
12413 Toward Infinity   26 38.77
7857 Tower Game (Hard)   62 14.63
34
34
100 Tower of Babylon   45 3108 50.62
19
21
7430 Tower Of Hanoi - Revisited   13 2146 50.92
8
14
34183 Tower of Hanoi Movement - Hard   3 96 27.27
9
1
5163 Tower of Vientiane   105 34.94
2162 Towers of Powers   26 13.87
688 Toy Cars   2 648 18.52
12
20
9895 Tracking RFIDs   52 30.66
20562 Tracy and Charlie   1 48 56.00
17
34
14821 Traffic Lights   1 51 58.41
17
17
3643 Traffic Network   89 2120 18.30
18
21
34282 Traffic Planning   3 18 30.56
6
1
36712 Trailing digits   7 62 12.73
13
13
37053 Trailing Zeros   10 60 52.00
8
16
9896 Train delays   47 26.15
4273 Train TimeTable   7 426 34.14
14
8
11540 Training   18 26.67
7217 Training for final   26 2101 45.57
8
6
17112 Training Land of Fury   18 1391 47.65
9
9
6711 Transform a Sequence   41 30.94
4 Transform the Expression   258 44373 49.47
12
11
15383 Transform the Expression (Again!)   7 31.25
136 Transformation   83 32.18
17
17
13683 Transitive Closure   1 248 37.02
17
17
401 Translations   137 38.07
17
34
898 Transmitters   2 339 49.21
28
17
2903 Transportation   11 19.12
9532 Transportation   1 22 28.57
17
17
422 Transposing is Even More Fun   2 316 26.08
28
39
419 Transposing is Fun   1 307 36.85
17
26
10732 Trapezoid   2 56 32.56
17
26
1700 Traveling by Stagecoach   9 476 39.35
17
16
4993 Traveling Salesman   8 1043 37.18
14
2
3413 Traveling Shoemaker Problem   1 77 17.32
26
17
23132 Travelling cost   39 1645 33.19
10
8

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