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list of classical problems


ID NAME QUALITY USERS ACC % DIFFICULTY C I
3723 Snooker   5 460 50.55
9
27
3749 Subset Sums   74 4226 26.67
17
20
3752 JEDNAKOST   12 601 18.45
23
21
3763 George   15 528 52.53
19
18
3791 Street   8 669 51.43
10
13
3898 Even Palindrome   -1 251 10.23
3946 K-th Number   245 5839 35.44
25
27
3953 Paid Roads   8 261 27.57
19
26
3961 Journey with Pigs   133 41.31
3962 ELEVATOR II   2 101 43.31
9
26
3977 Police Query   8 302 17.37
27
30
4070 Two Professors   104 14.10
4103 Extend to Palindrome   44 2591 30.60
16
17
4110 Fast Maximum Flow   48 3063 34.32
25
22
4155 OTOCI   2 512 45.42
26
34
4166 Four colors   2 104 22.01
42
42
4168 Square-free integers   14 788 46.27
16
21
4172 Multiplicative digital root   1 77 24.07
4176 A Knightly Pursuit   2 67 29.28
26
17
4177 Herding   57 2731 35.22
14
15
4179 Temptation Island   2 655 45.09
20
12
4182 Candy (Again)   2 236 18.78
34
34
4185 Cube   57 35.57
4186 Break a New RSA system   1 138 34.12
4188 Amazing equality   43 14.08
4189 Landing   1 8 4.08
50
50
4197 Dominoes   4 125 23.08
23
23
4198 Lego   5 195 25.35
24
22
4201 Coder Ratings   26 1397 35.83
15
18
4206 Fast Maximum Matching   33 2094 29.48
22
19
4350 Giá trị lớn nhất 3   15 419 23.50
28
20
4421 Irreducible polynomials over GF2   64 18.04
4458 Rainbow   2 38 19.53
34
42
4487 Can you answer these queries VI   27 1367 23.62
34
28
4523 Binomial Coefficients   210 41.58
23
12
4525 Digger Octaves   6 391 35.55
17
21
4528 Frog Wrestling   69 37.50
4666 Wireless   1 128 37.02
17
17
4828 ZSequence   53 18.02
5163 Tower of Vientiane   105 34.94
5446 Fishing Net   176 31.96
5449 Seinfeld   189 9560 40.07
8
11
5453 Air Strike   2 178 23.78
17
17
5566 Math with Bases   15 10.78
5917 Factorial length   11 3478 34.57
5
17
6168 Building Bridges   27 1665 25.98
11
17
6230 Dictionary order   6 9.30
6236 Matches   8 458 22.10
26
7
6256 Inversion Count   534 18104 32.03
16
18
6264 Rank of a Fraction   4 132 31.92
12
34

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