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list of classical problems (unsolved)


ID NAME QUALITY USERS ACC % DIFFICULTY C I
1022 Angels and Devils   6 675 31.13
26
25
11414 Combat on a tree   3 256 31.12
28
34
14943 Dynamically-Rooted Tree   21 343 31.12
21
23
16272 Nanoworld   1 42 31.11
17
17
31970 Urdhva - Tiryag Bhyam   -6 86 31.10
1
1
34112 The Sum of Unitary Divisors   1 91 31.09
17
45
102 GX Light Pipeline Inc   80 31.09
18289 Maggu and Mystery   19 31.08
21616 Game of chocolate   3 588 31.08
5
5
30669 Ada and Trip   35 994 31.07
14
11
25309 Save Area 11   14 130 31.05
5
6
28450 Ada and Path   9 110 31.05
17
29
36266 Nahid The Reporter   3 18 31.03
1
1
17303 Board   203 31.03
2177 Galou is back!   -1 226 31.01
12964 Count on a treap   10 30.99
27269 Cube Numbers   29 615 30.99
9
11
1708 Square Count   75 30.98
7188 Escape from Jail   12 629 30.98
18
23
8591 Prime Permutations   5 110 30.96
28
23
21456 I Ken Bit Yu   5 117 30.96
9
21
39924 Precious Prizes   1 51 30.95
17
12
24772 Manipulate Dwarfs   5 143 30.95
20
20
36941 AND Queries   4 22 30.94
23
34
6711 Transform a Sequence   41 30.94
10186 Divisor Digits   6 1290 30.93
8
12
11578 A Famous City   10 807 30.89
16
21
11577 The Famous ICPC Team Again   1 83 30.89
17
17
7403 Messy Administration   1 14 30.88
17
17
30787 Ada and Aphids   11 212 30.88
27
26
7408 Camelot   2 64 30.88
17
17
22804 Knapsack   4 56 30.87
21
23
1471 A Game of Pearls   1 45 30.86
17
9
3897 Convex Polygons   2 124 30.86
17
34
15248 Swap (Easy - Level 2)   17 30.86
1
1
10581 Ball Stacking Again   1 158 30.86
8732 Best Fit   1 196 30.84
5833 XOR Rounds   2 360 30.83
9
13
11493 Goto & labels   64 30.83
18167 SubXor   76 1906 30.82
25
29
19786 Mr Toothless and His GCD Operation   7 392 30.81
6
9
11707 Wrong directions   2 50 30.81
39
34
5128 Bomb the Bridge   1 46 30.80
17
17
4021 Bipalindrome   183 30.77
6170 Homecoming   1 32 30.77
17
34
7860 Deal or No Deal   1 13 30.77
8324 Military patrol   1 57 30.77
34
50
1268 CN Tower (Easy)   3 1123 30.75
8
6
12397 Johnny plays with connect 4   2 54 30.73
17
12
7600 Milk Trading   5 186 30.71
1
28

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