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list of classical problems


ID NAME QUALITY USERS ACC % DIFFICULTY C I
4565 What is your Logo   3 916 45.94
1
13
4667 Gremlins   3 52 28.15
28
34
4839 Ant   3 191 39.10
23
28
5120 Minimal Possible String   3 55 5.08
34
28
5464 Counting triangles   3 204 28.86
6
28
5466 Electronic queue   3 156 36.89
12
17
5649 Divide Polygon   3 33 21.14
9
34
5969 Finding Maximum   3 103 30.45
13
23
6041 Mountain Walking   3 475 42.56
9
1
6325 Many polygons   3 199 26.15
12
17
6477 Bowling   3 520 28.56
8
11
6726 Goldbach graphs   3 30 54.55
17
17
6805 Counter attack   3 175 60.72
17
17
6956 IOI2009 Mecho   3 162 18.09
28
23
7022 Cow Patterns   3 115 24.60
28
28
7034 Crashing Robots   3 161 46.42
17
1
7239 Cells   3 76 45.45
17
9
7335 Spheres   3 129 9.55
17
39
7426 Imperial Units   3 500 45.43
3
12
7507 Wonderful Randomized Sum   3 373 40.43
1
1
7637 Road Map   3 78 54.68
20
20
7696 Encryption   3 978 36.02
17
17
7709 Jumping Zippy   3 64 55.34
26
34
7753 Happy Numbers II   3 647 15.91
23
17
7761 Jollo   3 394 39.98
17
9
7805 Kitchen Robot   3 88 31.90
9
9
7859 Upper Right King (Hard)   3 165 36.85
26
34
7881 Ljutnja   3 637 24.24
34
21
7969 A Knights’ Tale   3 76 23.33
17
17
8044 Fantastic Discovery   3 306 42.60
14
14
8075 Sequence   3 57 27.66
39
39
8105 Dot Product Maximization   3 71 17.33
17
17
8263 Big Pyramid   3 45 59.76
23
23
8277 Number of Prime Strings   3 91 18.95
23
28
8409 Favorite Sub Hair   3 95 41.55
26
26
8720 Looks like Nim - but it is not   3 90 21.35
6
28
8757 Coing tossing   3 160 61.56
12
34
8820 Okret   3 40 19.32
39
34
8839 Longest Common Difference Subsequence   3 72 24.75
34
39
8842 Boring Homework   3 153 42.54
17
17
8895 Power Crisis   3 441 33.98
17
13
8930 Party!   3 61 18.55
17
34
8989 Funny programming contest   3 34 24.71
12
23
8991 Number Guessing Game 2   3 130 36.05
17
42
9070 Lightning Conductor   3 546 31.94
9
17
9096 Bob and magical scale   3 65 25.46
26
34
9104 Match the words   3 411 50.09
9
17
9255 Publication   3 38 61.63
23
17
9640 Equilibrium   3 249 28.16
9
9
9760 Indomie   3 108 47.02
26
26

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