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list of classical problems


ID NAME QUALITY USERS ACC % DIFFICULTY C I
7150 Palindrome 2000   57 3302 27.63
14
14
7133 Garden 2005   1 69 23.42
7132 Headshot   7 1407 37.40
8
14
7109 Indicator of progression   2 325 23.89
17
17
7108 Heptadecimal Numbers   9 1231 35.72
2
2
7107 G Key   4 87 44.98
30
1
7104 Feanor The Elf   -1 733 40.24
12
12
7103 Edit Distance   1 74 18.02
17
17
7102 Doing The Word Wrap   1 175 38.33
7101 Charly And Nito   4 314 37.22
13
17
7100 Back To The Polygon   88 34.80
7099 Advanced Edit Distance   11 410 31.96
10
20
7050 Necklace Decomposition   48 60.61
7035 The Embarrassed Cryptographer   5 358 32.25
13
13
7034 Crashing Robots   3 171 47.90
17
1
7025 Roads in Berland   1 135 33.29
17
34
7023 Cookies   19 28.80
7022 Cow Patterns   3 128 26.15
28
28
7019 Zig-Zag rabbit   5 596 36.47
22
19
7015 Party   -1 1056 50.99
3
15
7010 Police Business   6 25.00
7002 Buildings   5 81 37.90
21
30
7001 Visible Lattice Points   1 563 30.21
17
34
6999 Avoiding SOS Grids   69 10.71
6988 Beer Machines   5 33 17.36
43
37
6986 Summing Slopes   61 28.79
6985 Rearranging Digits   56 22.53
6981 The Least Number   23 24.43
6978 Check 1324   4 101 23.08
17
17
6977 Odd Independent Sets   17 51.28
6957 Partial Palindrome   3 5.00
6956 IOI2009 Mecho   3 167 18.36
28
23
6951 MP3 Player   42 28.57
6950 A HUGE TOWER   1 131 48.34
1
34
6949 PIN   145 28.30
17
34
6926 Tree game   1 57 9.70
34
34
6917 Catch Sheep   2 40 25.41
34
34
6906 Raining Parabolas   2 257 21.65
26
26
6898 Substring Problem   22 851 15.19
23
23
6895 Maximum Edge of Powers of Permutation   12 21.39
6893 Power Sums   2 107 57.01
26
28
6885 Wonkas Oompa-Impa Dilemma   16 22.22
6860 Asistent   25 13.45
6852 Fish   4 185 30.37
26
21
6851 Fence   43 24.40
6832 To Score or not to score   46 29.01
6831 Two Ball Game   66 28.12
6830 Soccer Bets   6 1600 51.20
8
9
6829 Polynomial   2 194 30.39
17
17
6828 Lineup   7 704 32.08
11
9

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