list of classical problems (unsolved)


ID NAME QUALITY USERS ACC % DIFFICULTY C I
2826 Round-Robin Scheduling   12 650 36.17
23
22
1847 No Change   37 1684 36.16
11
14
7322 Prime Pattern   1 97 36.16
23
17
3724 Rainbow Ride   9 497 36.16
19
19
23153 Equivalent Passwords   9 77 36.16
21
14
29455 Alphabetic Rope   7 238 36.15
20
13
3641 Earthquakes   26 36.14
2901 One Geometry Problem   9 1827 36.14
4
13
13807 Rage Drug   3 35 36.13
17
21
180 How to pack containers   1 108 36.13
1
1
23507 Retrovirus   6 94 36.11
15
13
36423 One Eight_Nine   3 197 36.11
3
9
13799 Naive Loki   1 121 36.10
1
17
207 Three-coloring of binary trees   16 887 36.10
20
17
14947 Breaking and Entering   2 27 36.08
26
9
27319 Mangu Numbers   11 115 36.08
19
23
12612 Path of the righteous man   28 505 36.07
20
22
26179 Windy Cannon   8 295 36.07
5
2
21395 Ohani And Binary Search Tree   -1 130 36.05
50
17
5450 Tiles of Tetris, Not!   15 3205 36.04
4
5
11574 A Famous Stone Collector   3 130 36.03
9
23
13816 Pheversos Game   1 8 36.03
17
34
10405 Shooting the balloons!   11 347 36.02
23
27
7809 Cow Photographs   2 173 36.01
26
26
7971 The Cyber Traveling Salesman   1 38 36.00
34
17
26685 I Love Kd-Trees II   6 136 36.00
21
23
34542 Lord of Light   312 36.00
9
1
25892 Palindrome in a Tree   8 155 35.99
17
13
2055 Weird Numbers   2 346 35.99
17
17
297 Aggressive cows   1075 47512 35.98
16
23
11444 MAXOR   114 35.95
9
26
33062 LCM Pesticide   2 11 35.94
50
50
1845 Mice and Maze   100 5569 35.93
10
10
27234 Sums of 2 and 3   18 973 35.93
5
10
10712 Easy Calculation   16 1377 35.93
10
14
34377 Digit Subsequence   11 257 35.92
7
11
25779 Cinema Conundrum   11 124 35.90
10
10
10081 Periodic Points   12 35.90
7696 Encryption   3 1004 35.88
17
17
9756 Alaska   24 2939 35.87
5
3
4657 Gas Wars   145 35.87
34
17
20174 Counting Divisors (cube)   7 407 35.87
21
42
25311 Candies   9 1096 35.86
6
7
12369 Fixture   114 35.85
1
1
4201 Coder Ratings   26 1397 35.83
15
18
22366 Badminton Tournament - Easy   7 214 35.80
26
20
15914 Update Sub-Matrix & Query Sub-Matrix   2 96 35.79
23
28
4156 PLAHTE   69 35.77
22560 Valid Path   6 67 35.74
6
8
7108 Heptadecimal Numbers   9 1231 35.72
2
2

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