list of classical problems


ID NAME QUALITY USERS ACC % DIFFICULTY C I
3195 Doors and Penguins   9 239 27.25
19
16
3196 Divisibility Relation   4 286 21.04
17
37
3197 Tree Construction   62 19.80
3249 Typesettin   2 34 45.45
1
1
3251 Slink   15 44.44
1
1
3253 Electronic Document Security   3 149 60.78
23
6
3254 Guard   14 51.72
3261 Race Against Time   37 1101 24.62
21
21
3266 K-query   242 5598 24.98
21
25
3267 D-query   454 12980 28.02
19
23
3273 Order statistic set   159 3165 26.09
22
20
3305 Roman Patrollers   46 59.46
3306 Very Special Boxes   109 31.33
9
26
3307 Hex Tile Equations   1 35 42.45
3308 The Bridges of San Mochti   2 64 54.40
17
17
3309 Bulletin Board   20 21.43
3310 Serial Numbers   1 34 29.27
34
17
3314 Umnozak   106 28.96
42
17
3322 Doubled Numbers   2 163 48.13
17
17
3347 Cestarine   61 34.57
3359 Stack   45 15.60
3360 Digital Image Recognition   27 16.85
3361 Cavli   1 40 44.87
17
17
3362 Setnja   2 243 21.31
9
17
3363 Svada   10 490 28.85
9
15
3372 Round Table   1 57 45.00
3373 Permutation Code   40 54.43
3374 Scavenger Hunt   10 1366 50.36
9
10
3375 Stamps   28 13733 41.76
5
3
3376 Parking Lot   1 138 20.05
17
17
3377 A Bug’s Life   342 15452 27.48
12
13
3379 String Shuffle   7 395 65.72
17
14
3380 Tourist   28 1083 38.09
19
31
3381 Highways   77 4380 38.01
10
9
3382 Monster Trap   1 27 22.44
34
17
3385 Yoda Goes Palindromic !   3 581 30.41
17
17
3387 Changing Maze   13 619 29.57
19
9
3388 Double Near Palindromes   1 448 33.99
17
17
3389 The Knights of the Round Circle   3 444 67.25
6
23
3390 Tribe Council   1 57 22.07
34
34
3393 Knot or Not   6 13.56
3394 Lagrange’s Four-Square Theorem   4 529 45.92
1
9
3405 Almost Shortest Path   80 1668 31.59
22
21
3406 Bases   68 21.12
3407 Candy   30 1358 42.56
11
19
3408 DNA Sequences   47 1983 26.17
16
20
3409 Electricity   2 806 47.74
5
1
3410 Feynman   122 34201 57.51
4
6
3411 Pole Position   2 915 47.34
8
8
3412 Higgs Boson   48 18.93

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