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list of classical problems


ID NAME QUALITY USERS ACC % DIFFICULTY C I
398 Roll Playing Games   118 14.30
34
17
399 Team Rankings   1 385 53.26
17
9
400 To and Fro   90 23323 55.54
14
7
401 Translations   131 38.11
17
34
402 Hike on a Graph   8 767 40.25
15
19
403 Sort fractions   6 706 32.96
9
21
404 Scanner   56 12.24
405 Tin Cutter   134 33.72
17
17
406 Logic   107 22.51
17
9
407 Random Number   44 28.25
17
17
408 Jill Rides Again   2 939 34.11
9
9
409 DEL Command   1 73 16.93
17
17
410 Variable Radix Huffman Encoding   1 173 18.96
1
1
411 Number of quite different words   4 238 33.43
17
27
412 K-path cover   181 20.04
1
50
413 Word Puzzles   4 368 18.08
30
14
414 Equatorial Bonfire   1 71 30.48
34
17
416 Divisibility by 15   5 1018 15.45
31
26
417 The lazy programmer   9 646 20.08
21
23
418 Necklace   43 16.76
419 Transposing is Fun   1 285 36.75
17
26
421 Another Road Problem   68 24.54
17
34
422 Transposing is Even More Fun   2 289 25.92
28
39
423 Assignments   242 4697 33.53
18
21
428 Particular Palindromes   5 492 32.02
22
24
449 Simple Numbers with Fractions Conversion   2 34 17.11
17
17
479 Permutation generator   1 126 27.48
21
17
481 Roots of polynomial   37 24.90
17
34
484 Fossil in the Ice   435 22.10
34
17
503 Prime Intervals   65 1750 15.88
21
19
515 Collatz   1 444 43.47
1
5
518 Zig-Zag Permutation   1 42 31.02
26
26
526 Divisors   38 1694 43.59
14
13
530 Divisors 2   10 909 52.43
12
16
598 Increasing Subsequences   142 34.21
34
34
660 Dungeon of Death   14 1341 42.81
13
26
661 Nail Them   13 963 42.90
10
15
665 String it out   22 1216 38.76
12
15
666 Con-Junctions   32 988 40.69
14
19
677 A place for the brewery   210 27.71
17
1
681 Building the Tower   2 98 19.80
17
12
684 Another Assignment Problem   1 103 12.40
34
1
685 Partition the sequence   3 232 21.12
21
30
687 Repeats   1 931 25.16
34
39
688 Toy Cars   1 580 17.91
11
17
693 Lethal Warfare   2 360 46.55
6
12
694 Distinct Substrings   91 5594 26.48
21
24
695 Unite Fast   1 129 27.29
9
9
696 Truth or not   1 271 21.77
1
1
697 Matrix Words   94 25.33
1
1

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