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list of classical problems


ID NAME QUALITY USERS ACC % DIFFICULTY C I
30961 Non Coprime Sequences(Hard)   4 16 7.64
34
34
15164 primes triangle (I)   3 65 7.59
34
26
14700 Delta catheti II (Hard)   1 3 7.55
7490 Biology   15 7.51
10841 Supplying the Suppliers   1 10 7.43
1815 Problems Collection (Volume X)   76 7.33
19216 Super Mario Revisited   6 21 7.23
20
23
2419 G-Line Grid   1 4 7.14
10443 Bridges   1 7.14
15270 A plus B   1 12 6.98
34
34
3902 Fight with functions   3 20 6.55
42
34
19301 Operators (new ver)   3 40 6.54
38
17
13369 Cut on a tree   9 6.53
1726 Exchange   18 6.52
41890 Anagrams and Divisibility   5 6.42
6299 Move Marbles   1 21 6.37
17
34
14830 The Codefather   8 6.07
1
1
10572 Cheating on the contest   1 24 6.04
17
34
2151 Digital Calculator   22 5.81
22675 A conjecture of Paul ErdÅ‘s (hard)   2 4 5.56
34
34
36704 Projectile Motion   2 8 5.51
34
26
23806 Yossy, The King of IRYUDAT   3 43 5.48
28
39
2019 The Rolling Ball   3 5.26
9527 Department   7 5.15
34
17
16240 Easy Password   41 5.09
17
26
5120 Minimal Possible String   3 55 5.08
34
28
8886 Guess number!   17 5.03
34
34
2009 Cryptography   1 142 4.80
1
34
10210 After Party Transfers   1 36 4.79
34
28
25450 When Does The World End   1 4 4.67
34
50
10799 Happiness at the lowest cost   11 4.65
5157 Game Simulator   1 17 4.57
50
17
8478 Ancient Pocket Calculator   7 4.44
22177 RajaRani   3 3 4.35
17
17
13882 THE WITTY BOY   1 4 4.32
34
17
12076 Longest Common Subsequence   5 119 4.20
50
50
9753 Tuple Division   17 4.10
850 Soccer Choreography   4 4.02
40643 The Revenge Of Anti Hash   1 4 4.00
34
34
36441 Funny Prime Factorization   4 48 3.73
17
1
4189 Landing   4 3.64
31971 NEO   1 10 3.60
34
50
34973 Yet Another Subset Sum Problem   2 3 3.41
26
34
2661 Illumination   6 3.40
944 Free Tour   16 3.34
2000 Boxes (Hard)   2 17 3.07
26
34
15257 Partition function (HARD)   1 6 2.93
50
42
231 The Zebra Crossing   12 2.67
3647 Moebius   1 2.67
10683 DRIVE   1 2.50

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