list of challenge problems


ID NAME QUALITY USERS ACC % DIFFICULTY C I
53 Kamil   17 5918 49.61
7
5
72 Food Shortage in Byteland   235 55.00
126 Solovay-Strassen Inverted   97 56.68
127 Johnny Goes Shopping   9 1346 65.64
20
24
155 Solving the Puzzle   10 5.18
218 Points on a Sphere   1 176 66.92
17
17
219 Pawns Gone Wild   21 60.89
222 The Burning City   43 59.72
225 Nightmare in the Towers of Hanoi   18 51.26
232 Bytelandian Telecom   43 68.42
240 Santa Claus and the Presents   117 73.56
246 Plant a Christmas Tree   88 45.84
270 Digits of Pi   7 5464 71.67
10
17
276 Herdkeeper   49 68.35
285 Atomic Shelters   119 61.67
289 The Turing Music Box   72 69.28
294 Johnny and the Optimisation of Homework   15 42.61
295 Bytelandian Origami   26 61.83
298 Closing down Railway Lines   24 90.88
313 The Game of Crosses & Crosses   26 75.45
314 Digits of e   1 2782 58.86
1
1
315 The Secret Fellowship of Byteland   45 68.14
316 Japan Crossword   149 67.99
317 Simple Image Recognition   2 299 72.16
17
17
321 X-Words   17 63.17
326 Enjoying a Multiplayer Game   17 71.76
353 Displace   1 42 46.79
34
17
356 Tethering the Mammoths   11 82.39
378 Size Contest   16 10127 55.55
8
2
525 Fractions Calculator   50 41.43
528 Shortest Superstring   3 165 47.86
34
34
755 Rectangles in a Square   29 57.42
756 Literature List   64 67.89
758 Tetris AI   71 77.95
759 Hard Image Recognition   15 72.85
761 Minesweeper   49 40.33
919 Prime checker   9 1558 65.35
10
29
1414 SuDoku Puzzle   3 393 53.81
26
26
1416 Electrification   35 38.19
1422 Digital Image Processing   2 117 74.30
34
34
1423 Digits of SQRT(2)   3 2582 67.20
12
6
1481 Yet another computer network problem   21 66.76
1492 Lexicographic sort   3 345 51.42
17
12
1558 Math II   35 72.56
1690 Intercept   41 31.25
1711 Greatest Common Divisor   104 31.78
1742 Brainf_ck   70 36.53
2004 Analyse Simple Arithmetical Expressions   694 51.74
2471 Magic Program II   1 67 35.82
17
17
2624 JawBreaker Game   1 54 53.26
17
17

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