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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
6125 Dos Date   2 793 55.86
17
6
6173 Burned Pancakes Tower   1 25 61.47
17
17
6295 Area Difference   2 394 44.67
6
5
6338 Monster   46 51.28
6646 Fully Parenthesized Expression   26 43.75
6877 Terminating or Non-Terminating   34 43.19
17
17
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
7965 The Electronic Dice   1 52 54.03
34
17
8102 Christmas Tree   4 832 66.29
5
5
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
11451 Aritho-geometric Series (AGS) (Challenge)   1 57 46.54
17
17
11462 Fun with Fibonacci Series (Challenge)   1 293 34.40
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
11793 Cartesian Shortest Path   55 44.59
11815 Tiling a WxH Grid With Dominoes   42 54.15
34
17
11849 A Very Easy Problem! (Challenge Mode)   2 84 50.48
42
9
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

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