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list of classical problems


ID NAME QUALITY USERS ACC % DIFFICULTY C I
389 Use of Hospital Facilities   1 50 11.68
34
26
390 Billiard   2 892 54.41
13
17
391 Railroads   85 17.48
17
17
392 Spin   39 24.56
1
17
393 Hexagon   71 49.03
17
1
394 Alphacode   579 22406 27.30
15
15
395 Anti-prime Sequences   2 341 49.55
9
9
396 Hit or Miss   130 43.62
1
1
397 I Conduit   3 192 15.45
21
21
398 Roll Playing Games   118 14.30
34
17
399 Team Rankings   1 385 53.26
17
9
400 To and Fro   90 23337 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   6 708 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   2 942 34.17
9
9
409 DEL Command   1 73 16.93
17
17
410 Variable Radix Huffman Encoding   1 174 18.99
1
1
411 Number of quite different words   4 238 33.43
17
27
412 K-path cover   181 20.03
1
50
413 Word Puzzles   4 371 18.02
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 20.15
21
23
418 Necklace   43 16.69
419 Transposing is Fun   1 287 36.61
17
26
421 Another Road Problem   68 24.54
17
34
422 Transposing is Even More Fun   2 290 25.94
28
39
423 Assignments   242 4723 33.51
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   66 1763 15.91
21
19
515 Collatz   1 443 42.91
1
5
518 Zig-Zag Permutation   1 43 31.38
26
26
526 Divisors   38 1697 43.56
14
13
530 Divisors 2   10 915 52.51
12
16
598 Increasing Subsequences   142 34.21
34
34
660 Dungeon of Death   14 1346 42.89
13
26
661 Nail Them   13 964 42.91
10
15
665 String it out   22 1217 38.77
12
15
666 Con-Junctions   32 993 40.75
14
19
676 Sorting is not easy   9 538 39.70
19
32
677 A place for the brewery   212 27.77
17
1

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