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list of classical problems


ID NAME QUALITY USERS ACC % DIFFICULTY C I
13076 Slikar   6 222 31.91
17
10
7683 Powered and Squared   8 711 27.13
19
16
32088 Chessboard State 1: National Chess Tournament   5 12 27.85
42
21
32091 Chessboard State 2: International Chess Tournament   1 6 20.00
50
17
32092 Chessboard State 3: Intergalactic Chess Tournament   1 6 61.22
50
34
368 Cobbled streets   98 5389 50.80
13
12
2816 Common Subsequences   5 217 28.61
26
34
5464 Counting triangles   3 204 28.86
6
28
6706 Making Chess Boards   25 26.15
6851 Fence   42 27.07
6732 Camels   76 41.88
6852 Fish   4 180 29.77
26
21
6926 Tree game   1 47 8.46
34
34
7025 Roads in Berland   1 123 32.70
17
34
260 Containers   3 291 45.99
17
14
6824 Flag   1 79 26.48
34
34
277 City Game   16 1289 38.93
20
21
6956 IOI2009 Mecho   3 162 18.09
28
23
6951 MP3 Player   34 28.75
6949 PIN   114 26.25
17
34
6950 A HUGE TOWER   1 125 47.38
1
34
21058 Dirty Plates   23 44.44
21057 Super Lucky Palindromes   3 30 29.91
34
34
1108 Card Trick   68 2193 50.38
21
24
10354 Count Strings   3 17 7.98
39
39
34009 Counting Child   18 416 54.85
7
9
8796 Cubist Artwork   7 646 68.33
7
9
19976 HYPERCUBES   1 111 45.31
1
17
9032 Cube Free Numbers   65 4127 31.66
12
11
8735 Suffix Of Cube   1 94 42.08
291 Cube Root   1 251 16.62
23
15
867 Perfect Cubes   11 2188 47.68
7
5
27269 Cube Numbers   29 605 30.72
9
11
4036 Cuckoo Hashing   3 151 27.58
17
6
21692 CURD PRODUCERS   6 527 42.06
15
11
7193 The Pharaoh Curse   16 25.32
10883 Customs   14 31.25
17626 Eat all the brownies !   7 1587 43.19
5
21
67 Cutting out   2 295 43.16
30
27
92 Cutting off Squares   -1 254 42.63
1
1
3877 Cvjetici   18 977 48.55
12
21
3897 Convex Polygons   2 119 30.29
17
34
19578 Chipmunks with Brain   4 77 39.05
5
9
23541 CWC-2015   8 143 17.98
17
17
19551 A Colorful world   3 87 31.64
6
1
4574 Riding in cycles   41 24.31
40148 Distinct Cyclings   1 9 23.81
42
34
1681 Cylinder   2 920 38.32
9
26
9509 Shortest Path on a Cylinder   11 28.78
1391 Summing to a Square Prime   16 1417 54.07
12
17

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