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list of classical problems


ID NAME QUALITY USERS ACC % DIFFICULTY C I
6895 Maximum Edge of Powers of Permutation   12 21.39
6906 Raining Parabolas   2 257 21.65
26
26
6917 Catch Sheep   2 40 25.41
34
34
6926 Tree game   1 57 9.70
34
34
6949 PIN   145 28.30
17
34
6950 A HUGE TOWER   1 131 48.34
1
34
6951 MP3 Player   42 28.57
6956 IOI2009 Mecho   3 167 18.36
28
23
6957 Partial Palindrome   3 5.00
6977 Odd Independent Sets   17 51.28
6978 Check 1324   4 101 23.08
17
17
6981 The Least Number   23 24.43
6985 Rearranging Digits   56 22.53
6986 Summing Slopes   61 28.79
6988 Beer Machines   5 33 17.36
43
37
6999 Avoiding SOS Grids   69 10.71
7001 Visible Lattice Points   1 563 30.21
17
34
7002 Buildings   5 81 37.90
21
30
7010 Police Business   6 25.00
7015 Party   -1 1057 51.01
3
15
7019 Zig-Zag rabbit   5 596 36.47
22
19
7022 Cow Patterns   3 128 26.15
28
28
7023 Cookies   19 28.80
7025 Roads in Berland   1 135 33.29
17
34
7034 Crashing Robots   3 171 47.90
17
1
7035 The Embarrassed Cryptographer   5 358 32.25
13
13
7050 Necklace Decomposition   48 60.61
7099 Advanced Edit Distance   11 410 31.96
10
20
7100 Back To The Polygon   88 34.80
7101 Charly And Nito   4 314 37.22
13
17
7102 Doing The Word Wrap   1 175 38.33
7103 Edit Distance   1 74 18.02
17
17
7104 Feanor The Elf   -1 733 40.24
12
12
7107 G Key   4 87 44.98
30
1
7108 Heptadecimal Numbers   9 1231 35.72
2
2
7109 Indicator of progression   2 325 23.89
17
17
7132 Headshot   7 1407 37.40
8
14
7133 Garden 2005   1 69 23.42
7150 Palindrome 2000   57 3302 27.62
14
14
7152 Boundary 2003   1 18 12.34
34
1
7155 Test   10 425 19.37
34
27
7168 Termites strike back   2 19 39.66
17
34
7184 Axis of Symmetry   1 71 18.88
26
26
7185 Bye Bye Cakes   17 3669 38.67
8
7
7186 Counting Pascal   2 134 29.77
17
17
7187 Dinosaur Menace   3 184 8.83
17
34
7188 Escape from Jail   12 629 30.98
18
23
7189 Falta Envido   1 182 36.33
17
17
7190 Guess the Number   14 2237 33.38
4
9
7191 Hexagonal Board   6 546 62.20
12
9

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