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list of classical problems


ID NAME QUALITY USERS ACC % DIFFICULTY C I
6700 Make it Smooth   2 72 21.13
17
17
6706 Making Chess Boards   24 23.48
6709 Multiplying by Rotation   1 90 51.49
6711 Transform a Sequence   40 39.62
6717 Two Paths   9 229 17.64
34
36
6720 Paper Fold   19 13.01
6726 Goldbach graphs   3 33 56.10
17
17
6731 Coeficientes   2 1259 50.05
10
9
6732 Camels   78 36.76
6738 Nice Quadrangles   175 41.40
6767 Sequence Function   11 18.09
6772 Happy Coins   14 2448 55.36
3
10
6773 Dinostratus Numbers   1 95 18.13
17
17
6779 Can you answer these queries VII   19 1375 19.28
39
28
6803 Absurd prices   2 387 23.76
12
12
6804 Cheating or Not   16 14.09
6805 Counter attack   3 176 60.91
17
17
6818 Capital City   93 2874 39.30
20
20
6819 Yet Another Assignment Problem   1 41 11.52
1
6823 Seller Bob   68 22.30
6824 Flag   1 78 25.64
34
34
6825 Field Plan   1 101 29.96
17
17
6826 Hacking   6 128 13.93
21
26
6827 Last Minute Construction   22 17.94
6828 Lineup   7 700 32.03
11
9
6829 Polynomial   2 190 30.24
17
17
6830 Soccer Bets   6 1598 51.15
8
9
6831 Two Ball Game   65 28.22
6832 To Score or not to score   43 28.24
6851 Fence   41 25.67
6852 Fish   4 183 30.18
26
21
6860 Asistent   23 14.15
6885 Wonkas Oompa-Impa Dilemma   13 26.44
6893 Power Sums   2 106 56.35
26
28
6895 Maximum Edge of Powers of Permutation   10 25.37
6898 Substring Problem   22 838 15.13
23
23
6906 Raining Parabolas   2 254 21.48
26
26
6917 Catch Sheep   2 37 24.79
34
34
6926 Tree game   1 50 8.76
34
34
6949 PIN   139 27.78
17
34
6950 A HUGE TOWER   1 129 48.07
1
34
6951 MP3 Player   34 27.92
6956 IOI2009 Mecho   3 166 18.33
28
23
6957 Partial Palindrome   3 6.94
6977 Odd Independent Sets   13 51.72
6978 Check 1324   4 97 22.75
17
17
6981 The Least Number   22 27.12
6985 Rearranging Digits   54 22.78
6986 Summing Slopes   61 31.97
6988 Beer Machines   5 33 18.53
43
37

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