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list of classical problems


ID NAME QUALITY USERS ACC % DIFFICULTY C I
6706 Making Chess Boards   25 26.15
6709 Multiplying by Rotation   1 88 51.00
6711 Transform a Sequence   40 45.65
6717 Two Paths   8 217 17.52
34
36
6720 Paper Fold   19 13.01
6726 Goldbach graphs   3 30 54.55
17
17
6731 Coeficientes   2 1253 50.05
10
9
6732 Camels   76 41.88
6738 Nice Quadrangles   176 42.55
6767 Sequence Function   11 19.10
6772 Happy Coins   14 2429 55.27
3
10
6773 Dinostratus Numbers   1 92 17.79
17
17
6779 Can you answer these queries VII   17 1245 19.47
38
27
6803 Absurd prices   2 381 23.57
12
12
6804 Cheating or Not   16 14.09
6805 Counter attack   3 175 60.72
17
17
6818 Capital City   92 2771 39.09
19
20
6819 Yet Another Assignment Problem   1 41 11.56
1
6823 Seller Bob   66 21.99
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   22 826 15.16
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

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