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list of classical problems


ID NAME QUALITY USERS ACC % DIFFICULTY C I
6700 Make it Smooth   2 71 20.85
17
17
6706 Making Chess Boards   25 26.15
6709 Multiplying by Rotation   1 90 51.49
6711 Transform a Sequence   40 42.42
6717 Two Paths   9 228 17.61
34
36
6720 Paper Fold   19 13.01
6726 Goldbach graphs   3 32 55.00
17
17
6731 Coeficientes   2 1258 50.05
10
9
6732 Camels   78 39.68
6738 Nice Quadrangles   175 42.57
6767 Sequence Function   11 18.89
6772 Happy Coins   14 2446 55.34
3
10
6773 Dinostratus Numbers   1 94 18.04
17
17
6779 Can you answer these queries VII   19 1367 19.24
39
28
6803 Absurd prices   2 386 23.78
12
12
6804 Cheating or Not   16 14.09
6805 Counter attack   3 175 60.85
17
17
6818 Capital City   93 2863 39.28
20
20
6819 Yet Another Assignment Problem   1 41 11.53
1
6823 Seller Bob   68 22.65
6824 Flag   1 77 25.98
34
34
6825 Field Plan   1 101 30.00
17
17
6826 Hacking   6 126 13.87
21
26
6827 Last Minute Construction   22 17.94
6828 Lineup   7 698 32.12
11
9
6829 Polynomial   2 189 30.12
17
17
6830 Soccer Bets   6 1597 51.12
8
9
6831 Two Ball Game   64 28.05
6832 To Score or not to score   43 28.46
6851 Fence   41 26.23
6852 Fish   4 182 30.10
26
21
6860 Asistent   23 14.20
6885 Wonkas Oompa-Impa Dilemma   13 26.74
6893 Power Sums   2 105 56.74
26
28
6895 Maximum Edge of Powers of Permutation   10 27.87
6898 Substring Problem   22 836 15.12
23
23
6906 Raining Parabolas   2 253 21.44
26
26
6917 Catch Sheep   2 37 24.89
34
34
6926 Tree game   1 49 8.54
34
34
6949 PIN   138 28.17
17
34
6950 A HUGE TOWER   1 128 47.94
1
34
6951 MP3 Player   34 27.92
6956 IOI2009 Mecho   3 166 18.33
28
23
6957 Partial Palindrome   3 7.69
6977 Odd Independent Sets   13 55.56
6978 Check 1324   4 97 22.82
17
17
6981 The Least Number   21 30.00
6985 Rearranging Digits   54 25.70
6986 Summing Slopes   60 33.04
6988 Beer Machines   5 33 18.65
43
37

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