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list of classical problems


ID NAME QUALITY USERS ACC % DIFFICULTY C I
6700 Make it Smooth   2 70 20.79
17
17
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   9 227 17.50
34
36
6720 Paper Fold   19 13.01
6726 Goldbach graphs   3 30 53.85
17
17
6731 Coeficientes   2 1256 50.04
10
9
6732 Camels   76 41.88
6738 Nice Quadrangles   175 42.79
6767 Sequence Function   11 19.10
6772 Happy Coins   14 2445 55.34
3
10
6773 Dinostratus Numbers   1 93 17.99
17
17
6779 Can you answer these queries VII   18 1346 19.31
38
28
6803 Absurd prices   2 382 23.60
12
12
6804 Cheating or Not   16 14.09
6805 Counter attack   3 175 60.85
17
17
6818 Capital City   93 2852 39.27
20
20
6819 Yet Another Assignment Problem   1 41 11.56
1
6823 Seller Bob   68 22.90
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   7 697 32.13
11
9
6829 Polynomial   2 189 30.12
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 28.46
6851 Fence   41 26.52
6852 Fish   4 181 29.92
26
21
6860 Asistent   23 14.29
6885 Wonkas Oompa-Impa Dilemma   13 28.24
6893 Power Sums   2 105 57.10
26
28
6895 Maximum Edge of Powers of Permutation   10 28.45
6898 Substring Problem   22 835 15.14
23
23
6906 Raining Parabolas   2 253 21.44
26
26
6917 Catch Sheep   2 35 24.36
34
34
6926 Tree game   1 49 8.57
34
34
6949 PIN   137 28.57
17
34
6950 A HUGE TOWER   1 128 47.94
1
34
6951 MP3 Player   34 27.92
6956 IOI2009 Mecho   3 165 18.28
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 30.93
6985 Rearranging Digits   54 26.02
6986 Summing Slopes   60 35.21
6988 Beer Machines   5 33 18.74
43
37

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