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list of classical problems (unsolved)


ID NAME QUALITY USERS ACC % DIFFICULTY C I
297 Aggressive cows   1075 47509 35.98
16
23
2 Prime Generator   630 83184 16.31
15
14
394 Alphacode   580 22981 27.42
15
15
1043 Can you answer these queries I   569 14329 19.05
25
24
346 Bytelandian gold coins   546 26017 25.23
11
12
6256 Inversion Count   534 18100 32.03
16
18
3267 D-query   461 13986 28.60
19
23
5 The Next Palindrome   452 20703 10.82
25
18
1437 Longest path in a tree   407 20181 39.56
14
15
8002 Horrible Queries   399 11160 29.81
19
18
3377 A Bug’s Life   343 15924 27.72
12
13
1436 Is it a tree   339 21154 35.31
10
10
1841 Prime Path   338 10594 57.99
19
18
95 Street Parade   318 18628 29.08
14
11
1021 Aibohphobia   310 10728 36.22
12
17
3923 Philosophers Stone   310 12869 43.54
10
11
6219 Edit distance   306 13254 33.14
12
18
1 Life, the Universe, and Everything   304 223424 33.17
4
3
14930 Princess Farida   274 12257 26.80
7
10
740 Treats for the Cows   261 8632 42.74
13
14
4 Transform the Expression   258 44366 49.46
12
11
345 Mixtures   256 9222 36.24
17
21
97 Party Schedule   251 8959 36.24
14
16
3266 K-query   248 6124 25.55
21
25
206 Bitmap   247 9660 28.29
15
16
3946 K-th Number   245 5836 35.43
25
27
423 Assignments   244 4838 33.69
18
22
1716 Can you answer these queries III   236 12142 43.83
22
21
14932 Lowest Common Ancestor   234 7944 29.25
15
15
1805 Largest Rectangle in a Histogram   229 8760 28.42
18
23
4580 ABCDEF   218 7923 29.36
14
16
10582 subarrays   215 9569 34.36
11
13
9861 Hotels Along the Croatian Coast   211 9065 41.78
10
12
32 A Needle in the Haystack   193 11379 38.37
15
14
3442 The last digit   190 30120 26.99
9
8
5449 Seinfeld   189 9560 40.07
8
11
8001 Fibonacci Sum   182 6995 27.96
19
19
61 Brackets   178 5548 24.47
19
20
4300 Rectangles   176 27067 49.75
5
8
11 Factorial   175 60686 45.14
6
12
11814 Eko   172 16736 26.94
14
14
375 Query on a tree   167 5897 17.61
33
27
54 Julka   165 23427 27.55
19
6
16487 Update the array !   165 5027 38.77
9
14
9921 ABC Path   162 7892 21.89
15
12
3273 Order statistic set   160 3450 26.91
22
20
15 The Shortest Path   157 7722 24.06
17
12
12471 DIE HARD   157 7984 38.68
12
13
302 Count on Cantor   155 13081 61.26
13
14
24 Small factorials   154 51408 29.64
15
9

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