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list of challenge problems


ID NAME QUALITY USERS ACC % DIFFICULTY C I
4163 Relative Board   6 36.36
4246 Place the Numbers II   1 546 66.49
1
1
5842 Polybius square   2 1031 59.26
34
12
6173 Burned Pancakes Tower   1 25 61.47
17
17
6295 Area Difference   2 394 44.67
6
5
6646 Fully Parenthesized Expression   26 43.75
7063 Cycles, More Cycles   21 82.50
7105 Reverse the Input   3 549 34.63
28
12
7225 Word To Number   3 159 60.48
12
6
7480 Nth Prime   4 621 45.61
26
12
7958 Prisoner of Benda (Challenge)   1 18 44.57
34
34
8102 Christmas Tree   4 832 66.29
5
5
8315 Number to Word   1 230 42.52
34
1
8638 Sum of Fibonacci numbers   1 137 73.02
50
34
8672 Distributing the balls   28 33.54
8675 Equation Check   2 267 57.35
1
6
8676 Digits of Phi (Golden Ratio)   3 296 53.42
9
9
8733 Summing up Last digits   31 61.86
8950 Grid points   46 58.06
9380 Connecting three towns   2 125 81.06
1
17
10295 HQNP Incomputable Hard   3 61 76.53
21
38
11397 Find all independent nodes   26 89.36
11410 Find New SPOJ Problems   8 42.07
11445 EASY MATH (Challenge)   4 177 46.12
17
17
11689 Real Roots   1 44 92.48
50
50
11719 The dojo s corridor   2 74 64.76
26
34
11746 Sum the Series   7 1941 58.80
6
13
11790 Size Contest!!!Reloaded!!   1 350 38.74
9
1
11975 PIEK   183 92.17
34
42
12393 Enigma Machine   1 23 56.92
12655 Strongly Connected Chemicals   13 95.45
12845 Minimum knight moves Challenge   3 346 72.09
34
17
12874 Pell Fourth   2 13 58.02
17
34
12919 Man of Steel   1 25 67.46
17
34
12996 Wow Square   127 54.73
13366 TWO KINGS   19 58.15
13418 Fibonacci factorization   1 10 29.70
50
50
13423 64bit-Fibonacci   6 152 43.84
38
34
13872 The SPP constant challenge   19 58.93
13923 Fractionated morse cipher   12 63.76
13929 Matrix Exponentiation   2 84 49.63
23
23
14530 Quadratic primes   1 12 56.77
15036 Automatic Brainf##k Code Generator (Shortening AI)   3 94 51.85
26
17
15619 Optimal Swap Sort   11 39.25
15673 Alice and Bob plays again   16 66.99
16509 Divisors   1 55 61.42
1
34
17257 Guess The Number With Lies v1   33 47.13
17308 Guess The Number With Lies v2   70 54.29
17598 Guess The Number With Lies v4   15 63.79
17820 Guess The Number With Lies v5   1 74 72.71
50
50

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