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list of challenge problems


ID NAME QUALITY USERS ACC % DIFFICULTY C I
2732 Attack A Single Test File!   1 3 40.74
34
34
3099 Super Quine   1 84 19.38
3880 Nop   1 607 49.87
1
1
4163 Relative Board   6 38.10
4246 Place the Numbers II   1 540 66.32
1
1
5842 Polybius square   2 1027 59.25
34
12
6125 Dos Date   2 791 55.83
17
6
6173 Burned Pancakes Tower   1 23 64.61
17
17
6295 Area Difference   2 388 44.61
6
5
6646 Fully Parenthesized Expression   26 43.75
7063 Cycles, More Cycles   16 83.43
7105 Reverse the Input   3 546 34.57
28
12
7225 Word To Number   2 156 61.22
17
9
7480 Nth Prime   4 618 45.60
26
12
7958 Prisoner of Benda (Challenge)   1 17 45.49
34
34
8102 Christmas Tree   4 827 66.23
5
5
8315 Number to Word   1 227 42.39
34
1
8638 Sum of Fibonacci numbers   1 135 72.81
50
34
8672 Distributing the balls   26 32.73
8675 Equation Check   1 264 57.38
1
9
8676 Digits of Phi (Golden Ratio)   2 293 53.64
17
17
8733 Summing up Last digits   31 72.01
8950 Grid points   44 57.73
9380 Connecting three towns   2 122 81.08
1
17
10295 HQNP Incomputable Hard   3 61 76.46
21
38
11397 Find all independent nodes   23 89.23
11410 Find New SPOJ Problems   8 42.66
11445 EASY MATH (Challenge)   2 158 45.67
17
17
11689 Real Roots   1 34 94.29
50
50
11719 The dojo s corridor   2 71 64.41
26
34
11746 Sum the Series   7 1865 58.89
6
13
11790 Size Contest!!!Reloaded!!   1 347 38.70
9
1
11793 Cartesian Shortest Path   54 43.98
11815 Tiling a WxH Grid With Dominoes   41 54.16
34
17
11849 A Very Easy Problem! (Challenge Mode)   2 81 50.95
42
9
11975 PIEK   182 92.21
34
42
12393 Enigma Machine   1 21 56.90
12655 Strongly Connected Chemicals   6 94.44
12845 Minimum knight moves Challenge   3 345 72.11
34
17
12874 Pell Fourth   2 13 64.17
17
34
12919 Man of Steel   1 25 67.46
17
34
12996 Wow Square   125 55.34
13366 TWO KINGS   17 62.42
13418 Fibonacci factorization   1 10 30.60
50
50
13423 64bit-Fibonacci   6 151 43.94
38
34
13872 The SPP constant challenge   19 61.46
13929 Matrix Exponentiation   2 84 50.61
23
23
14530 Quadratic primes   1 10 63.31
15036 Automatic Brainf##k Code Generator (Shortening AI)   3 92 51.86
26
17
15619 Optimal Swap Sort   9 43.29

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