list of classical problems


ID NAME QUALITY USERS ACC % DIFFICULTY C I
30755 Ada and GCD   20 435 21.75
28
15
4350 Giá trị lớn nhất 3   14 409 23.22
28
19
1702 Cleaning Robot   45 1551 34.33
28
20
237 Sums in a Triangle   -13 3573 42.40
28
10
115 Family   2 71 12.02
28
28
422 Transposing is Even More Fun   2 288 25.99
28
39
1479 The GbAaY Kingdom   1 123 19.29
28
39
1696 Will Indiana Jones Get There   2 120 26.71
28
23
1707 Reliable Nets   4 338 31.46
28
23
2414 Calculate The Cost   8 336 22.26
28
17
2670 Count Minimum Spanning Trees   4 178 17.15
28
39
2678 Closest distance   1 159 13.52
28
34
3413 Traveling Shoemaker Problem   2 73 16.87
28
17
3732 Slikar   1 207 51.61
28
17
3999 FROGGER   3 97 27.01
28
23
4667 Gremlins   3 52 28.15
28
34
5294 Recurrence   2 255 14.32
28
17
6956 IOI2009 Mecho   3 162 18.09
28
23
7022 Cow Patterns   3 113 24.53
28
28
7866 Regular expressions (Hard)   1 96 25.05
28
23
8542 Modern Pocket Calculator   35 9.15
28
6
8591 Prime Permutations   5 105 31.08
28
23
11443 Davids Greed   3 248 26.64
28
19
11580 A Famous Game   382 34.08
28
28
12241 Classification from Erdős and Selfridge   5 27 17.71
28
28
12746 Colorful Circle (EASY)   5 463 20.68
28
23
13367 EVEN COUNT   8 347 22.99
28
19
13738 Happy Valentine Day (Valentine Maze Game)   3 139 36.46
28
23
14928 Pyramidal Constructions   -1 334 49.90
28
23
15190 MAXIMUM RARITY   6 84 33.23
28
34
15769 Enjoy Adding GP to Series   2 60 26.50
28
34
17711 Gopu and Create Collections Part Two   4 260 29.03
28
28
18094 Robert Langdon & Florence   1 175 64.69
28
23
18667 Product of factorials (hard)   3 42 26.61
28
34
19143 TRISQRS   169 38.02
28
34
19148 Kill them All   3 111 22.45
28
34
20041 Hippo and Bloody Jungle   -1 37 18.60
28
17
21642 Tsunami   3 138 41.96
28
23
21834 Sadde and His City   3 45 24.22
28
23
23806 Yossy, The King of IRYUDAT   3 43 5.48
28
39
25001 Red Blue Line Segments   2 244 17.28
28
26
25365 Hexagram   3 33 48.78
28
17
25396 A Terribly Grimm Problem   2 17 29.67
28
28
27378 Legend of Heta   2 62 18.33
28
28
31772 Boss Baby   2 8 15.19
28
17
32843 Ada and TicTacToe   3 46 22.58
28
23
32940 Alien Language   2 70 39.44
28
34
34380 Even Semiprime Runs   4 22 63.74
28
28
34549 Mysteriousness of a Logical Expression   7 61 10.49
28
23
34742 Help Robin!!   13 8.47
28
28

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