list of classical problems


ID NAME QUALITY USERS ACC % DIFFICULTY C I
389 Use of Hospital Facilities   1 52 12.47
34
26
390 Billiard   2 897 54.41
13
17
391 Railroads   88 17.63
17
17
392 Spin   43 26.11
1
17
393 Hexagon   73 49.14
17
1
394 Alphacode   581 22644 27.35
15
15
395 Anti-prime Sequences   2 342 48.79
9
9
396 Hit or Miss   131 42.77
1
1
397 I Conduit   3 194 15.37
21
21
398 Roll Playing Games   119 14.40
34
17
399 Team Rankings   1 389 53.42
17
9
400 To and Fro   90 23402 55.57
14
7
401 Translations   132 37.64
17
34
402 Hike on a Graph   8 773 40.07
15
19
403 Sort fractions   6 710 32.97
9
21
404 Scanner   56 12.02
405 Tin Cutter   136 33.59
17
17
406 Logic   109 22.50
17
9
407 Random Number   44 27.88
17
17
408 Jill Rides Again   2 950 34.26
9
9
409 DEL Command   1 73 16.73
17
17
410 Variable Radix Huffman Encoding   1 176 19.05
1
1
411 Number of quite different words   4 239 32.91
17
27
412 K-path cover   181 19.91
1
50
413 Word Puzzles   4 373 18.06
30
14
414 Equatorial Bonfire   1 74 28.27
34
17
416 Divisibility by 15   5 1024 15.48
31
26
417 The lazy programmer   9 650 20.22
21
23
418 Necklace   43 16.97
419 Transposing is Fun   1 300 36.90
17
26
421 Another Road Problem   69 24.43
17
34
422 Transposing is Even More Fun   2 304 25.98
28
39
423 Assignments   243 4777 33.57
18
22
428 Particular Palindromes   5 497 32.15
22
24
449 Simple Numbers with Fractions Conversion   2 34 16.80
17
17
479 Permutation generator   1 128 27.54
21
17
481 Roots of polynomial   39 25.40
17
34
484 Fossil in the Ice   437 22.10
34
17
503 Prime Intervals   66 1792 15.99
21
19
515 Collatz   1 447 43.04
1
5
518 Zig-Zag Permutation   1 43 30.57
26
26
526 Divisors   38 1704 43.61
14
13
530 Divisors 2   10 931 52.51
12
16
598 Increasing Subsequences   143 34.21
34
34
660 Dungeon of Death   14 1350 42.94
13
26
661 Nail Them   13 967 42.88
10
15
665 String it out   22 1218 38.76
12
15
666 Con-Junctions   32 996 40.76
14
19
676 Sorting is not easy   9 540 39.72
19
32
677 A place for the brewery   214 27.84
17
1

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