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list of classical problems


ID NAME QUALITY USERS ACC % DIFFICULTY C I
6824 Flag   1 79 26.48
34
34
6825 Field Plan   1 99 29.81
17
17
6826 Hacking   6 126 13.87
21
26
6827 Last Minute Construction   22 17.94
6828 Lineup   7 693 32.26
11
9
6829 Polynomial   2 187 30.02
17
17
6830 Soccer Bets   6 1596 51.13
8
9
6831 Two Ball Game   64 28.05
6832 To Score or not to score   43 28.16
6851 Fence   42 27.07
6852 Fish   4 180 29.77
26
21
6860 Asistent   23 14.29
6885 Wonkas Oompa-Impa Dilemma   13 28.24
6893 Power Sums   2 104 56.91
26
28
6895 Maximum Edge of Powers of Permutation   10 30.77
6898 Substring Problem   22 825 15.15
23
23
6906 Raining Parabolas   2 253 21.44
26
26
6917 Catch Sheep   2 35 24.78
34
34
6926 Tree game   1 47 8.46
34
34
6949 PIN   114 26.25
17
34
6950 A HUGE TOWER   1 125 47.38
1
34
6951 MP3 Player   34 28.75
6956 IOI2009 Mecho   3 162 18.09
28
23
6957 Partial Palindrome   3 8.33
6977 Odd Independent Sets   13 55.56
6978 Check 1324   4 96 23.09
17
17
6981 The Least Number   21 31.91
6985 Rearranging Digits   54 26.02
6986 Summing Slopes   60 35.21
6988 Beer Machines   5 32 18.72
43
37
6999 Avoiding SOS Grids   65 10.41
7001 Visible Lattice Points   1 496 28.50
17
34
7002 Buildings   5 76 37.21
21
30
7010 Police Business   6 30.36
7015 Party   -1 1020 50.89
3
15
7019 Zig-Zag rabbit   4 587 36.87
23
17
7022 Cow Patterns   3 114 24.64
28
28
7023 Cookies   19 36.00
7025 Roads in Berland   1 123 32.70
17
34
7034 Crashing Robots   3 161 46.42
17
1
7035 The Embarrassed Cryptographer   5 338 31.61
13
13
7050 Necklace Decomposition   44 59.79
7099 Advanced Edit Distance   11 402 31.83
10
20
7100 Back To The Polygon   81 33.85
7101 Charly And Nito   4 307 36.89
13
17
7102 Doing The Word Wrap   1 169 37.70
7103 Edit Distance   1 71 18.97
17
17
7104 Feanor The Elf   -1 719 40.09
12
12
7107 G Key   4 83 43.69
30
1
7108 Heptadecimal Numbers   9 1222 35.57
2
2

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