list of classical problems


ID NAME QUALITY USERS ACC % DIFFICULTY C I
19687 Symmetric matrix 2   0 0.00
21135 Distinct Viewpoints   0 0.00
22316 pK   0 0.00
22320 Polynomial Drawing   0 0.00
23737 Ogledala   0 0.00
23738 ISOMORPH2   0 0.00
23772 Zamena   0 0.00
23776 K-Query Online   0 0.00
1797 Cardsharper   0 0.00
3647 Moebius   0 0.00
4476 Playfair Cracker   0 0.00
15381 Cut The Rope   0 0.00
19975 Amazing Prime Sequence (hard)   0 0.00
20174 Counting Divisors (cube)   0 0.00
22177 RajaRani   1 0 0.00
23742 Dolan and Nephews   0 0.00
231 The Zebra Crossing   1 0.36
23133 World Cup 2015   1 0.42
17
17
13098 Yet Another Conic Section Problem   1 0.60
10799 Happiness at the lowest cost   2 0.88
1457 Help Blue Mary Please! (Act I)   10 1.23
177 AB-words   13 1.24
15864 SUMMING   1 1.37
17
34
12916 MMM   4 1.46
9967 Playing with Words   3 1.55
1484 Search in XML   8 1.88
22037 Shortest Paths   1 1.89
23351 Hiccup And Lucky Dragons   1 1.89
17
17
6957 Partial Palindrome   1 2.04
9000 Bob and his new kite factory   2 2.06
17320 Guess The Number With Lies v3   1 2.27
5157 Game Simulator   2 2.35
2661 Illumination   4 2.36
7490 Biology   1 2.38
2000 Boxes (Hard)   13 2.87
15165 primes triangle (II)   3 2.88
850 Soccer Choreography   3 2.99
14830 The Codefather   3 3.09
1
1
2009 Cryptography   66 3.16
22675 A conjecture of Paul ErdÅ‘s (hard)   1 1 3.23
34
34
12076 Longest Common Subsequence   17 3.43
50
50
4948 Integer Factorization (29 digits)   7 3.64
16809 Estimation   2 34 3.76
30
14
944 Free Tour   16 3.77
15270 A plus B   2 4.08
3902 Fight with functions   16 4.11
6895 Maximum Edge of Powers of Permutation   3 4.17
12579 Search Insert Delete   12 4.67
34
1
22343 Norma   3 4.76
2019 The Rolling Ball   2 4.88

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