list of classical problems


ID NAME QUALITY USERS ACC % DIFFICULTY C I
390 Billiard   -1 808 54.53
17
1
391 Railroads   81 17.59
392 Spin   36 27.08
393 Hexagon   66 49.65
394 Alphacode   367 14709 27.17
14
15
395 Anti-prime Sequences   1 305 52.83
396 Hit or Miss   -1 122 44.95
397 I Conduit   2 173 16.85
26
26
398 Roll Playing Games   114 14.12
399 Team Rankings   380 53.45
400 To and Fro   55 17992 56.28
14
7
401 Translations   123 37.56
402 Hike on a Graph   7 704 40.51
20
26
403 Sort fractions   4 662 32.92
9
17
404 Scanner   52 11.70
405 Tin Cutter   130 33.60
406 Logic   100 23.09
407 Random Number   40 30.57
408 Jill Rides Again   2 826 35.09
12
12
409 DEL Command   66 15.51
410 Variable Radix Huffman Encoding   1 169 18.91
411 Number of quite different words   4 230 33.92
17
30
412 K-path cover   173 20.17
413 Word Puzzles   2 331 19.00
34
17
414 Equatorial Bonfire   1 69 32.10
34
17
416 Divisibility by 15   4 977 15.50
27
21
417 The lazy programmer   3 416 20.03
9
17
418 Necklace   33 21.41
419 Transposing is Fun   174 40.20
34
421 Another Road Problem   66 25.24
422 Transposing is Even More Fun   187 29.04
423 Assignments   131 3132 33.11
18
22
428 Particular Palindromes   3 469 32.39
17
26
449 Simple Numbers with Fractions Conversion   1 31 16.41
34
34
479 Permutation generator   116 27.82
17
17
481 Roots of polynomial   33 32.26
484 Fossil in the Ice   358 20.81
34
17
503 Prime Intervals   41 1114 15.70
22
20
515 Collatz   1 410 47.89
1
6
518 Zig-Zag Permutation   38 30.00
526 Divisors   23 1206 46.01
16
13
530 Divisors 2   5 697 54.32
15
17
598 Increasing Subsequences   139 34.50
660 Dungeon of Death   10 1202 43.50
13
28
661 Nail Them   7 819 43.34
7
8
665 String it out   10 968 41.53
12
17
666 Con-Junctions   26 692 44.24
15
20
676 Sorting is not easy   4 497 39.22
13
34
677 A place for the brewery   201 27.14
681 Building the Tower   2 89 19.45
26
17

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