list of classical problems


ID NAME QUALITY USERS ACC % DIFFICULTY C I
21135 Distinct Viewpoints   0 0.00
22320 Polynomial Drawing   0 0.00
26183 Laser Beam 2.0   0 0.00
3647 Moebius   0 0.00
4476 Playfair Cracker   0 0.00
15381 Cut The Rope   0 0.00
19687 Symmetric matrix 2   0 0.00
20174 Counting Divisors (cube)   0 0.00
20983 Hogwarts   0 0.00
22316 pK   0 0.00
23806 Yossy, The King of IRYUDAT   0 0.00
50
50
25450 When Does The World End   0 0.00
34
50
231 The Zebra Crossing   1 0.37
13098 Yet Another Conic Section Problem   1 0.59
10799 Happiness at the lowest cost   2 0.81
25024 Nth Prime   3 0.98
177 AB-words   13 1.25
1457 Help Blue Mary Please! (Act I)   11 1.44
34
17
9190 Perfect Maze   25 1.44
9967 Playing with Words   3 1.55
23930 Overlapping Words   1 1.85
9000 Bob and his new kite factory   2 1.87
1484 Search in XML   9 1.95
26305 Lights On!   9 2.20
17320 Guess The Number With Lies v3   1 2.27
23876 Board Score   1 2.33
2661 Illumination   4 2.33
5157 Game Simulator   2 2.35
22675 A conjecture of Paul ErdÅ‘s (hard)   1 1 2.56
34
34
24730 Magical colorful cats (hard)   1 2 2.67
34
34
15864 SUMMING   2 2.70
17
34
12076 Longest Common Subsequence   1 18 2.73
50
50
2000 Boxes (Hard)   13 2.85
25382 Meetings   1 2.94
850 Soccer Choreography   3 2.99
1797 Cardsharper   1 1 3.03
34
34
2009 Cryptography   70 3.20
22037 Shortest Paths   2 3.45
944 Free Tour   16 3.70
15270 A plus B   2 3.77
3902 Fight with functions   16 4.11
9527 Department   2 4.26
22177 RajaRani   2 1 4.35
12916 MMM   5 4.36
7490 Biology   5 4.42
16809 Estimation   2 47 4.72
30
14
2019 The Rolling Ball   2 4.76
22086 Prime Power Test   2 5.00
4189 Landing   3 5.17
8542 Modern Pocket Calculator   -1 30 5.21
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