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list of classical problems


ID NAME QUALITY USERS ACC % DIFFICULTY C I
13015 Counting Primes   32 1317 21.65
16
14
18164 Atoms in the Lab   32 3799 25.74
8
5
1754 Divisor Summation (Hard)   31 1132 15.49
22
21
5652 Snow White and the N dwarfs   31 848 21.41
21
31
8725 Closest Point Pair   31 1848 20.20
19
21
9012 Maximum Self-Matching   31 653 46.06
24
29
10108 Distributing Ballot Boxes   31 1150 36.24
12
16
10565 Alice Sieve   31 5007 53.32
2
7
11371 Answer the boss!   31 1131 34.91
15
15
13381 Manku Word   31 2097 46.96
13
15
18185 Give Away   31 1016 22.27
20
18
25967 Social Network Community   31 974 31.38
10
12
1025 Fashion Shows   30 27529 46.37
3
3
2277 Silly Sort   30 822 54.59
17
27
3407 Candy   30 1357 42.63
11
19
3861 Laser Phones   30 1355 28.59
20
18
4082 BLAST   30 1743 51.61
8
16
4226 Japan   30 1742 23.25
16
19
4556 Think I will Buy Me a Football Team   30 2167 44.99
7
11
5976 Traversing Grid   30 3704 58.48
6
10
9199 Circular Track   30 3336 40.26
7
14
30734 Ada and Orange Tree   30 360 23.72
22
21
50 Invitation Cards   29 1716 43.00
16
18
3943 Nested Dolls   29 1217 23.61
19
26
4031 Mass of Molecule   29 2562 48.13
12
9
4206 Fast Maximum Matching   29 1950 29.17
22
19
6691 Picking Up Chicks   29 2185 32.16
11
18
8670 THE MAX LINES   29 8006 36.84
4
10
9820 Through the troops   29 1955 44.81
12
11
9942 Holiday Accommodation   29 1055 25.91
23
25
18941 True Friends   29 939 50.73
12
12
27269 Cube Numbers   29 604 30.74
9
11
27318 Primal Fear   29 1449 22.33
13
14
34020 Ada and Pet   29 625 26.83
13
19
48 Glass Beads   28 3358 37.81
15
18
110 Fill the Cisterns   28 1400 31.31
21
20
3375 Stamps   28 13699 41.74
5
3
3380 Tourist   28 1024 38.49
19
31
7258 Lexicographical Substring Search   28 2050 21.69
23
19
9722 Insertion Sort   28 3825 30.68
12
12
10471 Aliens at the train, again!   28 811 45.00
16
16
12151 Pizzamania   28 2132 28.24
5
4
12612 Path of the righteous man   28 475 36.23
20
22
15267 FRIEND CIRCLE   28 1151 27.56
13
11
22268 Euler Totient Function Sieve   28 374 18.96
23
20
28306 Ada and Queue   28 2260 25.66
11
9
30690 Ada and Nucleobase   28 434 43.86
25
26
3107 Odd Numbers of Divisors   27 1042 18.26
22
22
3477 Baby   27 941 46.44
20
23
6168 Building Bridges   27 1637 26.01
11
17

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