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list of classical problems


ID NAME QUALITY USERS ACC % DIFFICULTY C I
12304 Smallest Inverse Sum of Divisors   5 84 28.09
17
24
12726 XOR Game   5 532 43.84
11
13
12746 Colorful Circle (EASY)   5 463 20.68
28
23
12943 Counting   5 79 47.71
8
30
13096 Amr Samir   5 914 31.04
9
10
13105 DNA   5 639 36.87
11
24
13405 MayanCalendar   5 121 54.45
8
8
13838 Mosty! Find Gn   5 556 49.54
9
24
14175 Power Factor Sum Sum (hard)   5 39 36.97
26
26
14823 Advanced Battleships   5 49 13.42
23
23
15215 David and his Obsession   5 426 41.32
12
9
15439 Zombie Outbreak   5 68 25.37
21
21
15506 Helping Igor   5 97 36.04
15
12
15847 Equalize the Sectors   5 155 60.25
10
27
16034 Minimum Number   5 491 16.05
11
1
16134 Save the cows!   5 59 14.16
1
6
16282 Horace and his primes   5 258 40.19
27
27
16283 Treasure Island   5 131 24.53
17
15
16300 Playing with isosceles triangle   5 315 27.12
13
21
16825 Divisors   5 86 17.54
21
26
17406 Cheating a Boolean Tree   5 111 35.78
23
15
17559 Two Game   5 317 36.97
1
39
17627 Family members   5 424 59.73
9
15
17660 The Bridge to Home   5 115 34.96
23
34
17707 Constructible Regular Polygons   5 499 55.61
8
8
17731 Buying Integers   5 107 40.71
8
11
18932 Sum of primes (reverse mode)   5 21 17.44
45
45
18939 K-th smallest number   5 209 13.84
13
17
19957 GETTING AN AP   5 488 36.75
8
12
19975 Amazing Prime Sequence (hard)   5 80 41.73
39
45
20654 Interesting Subset   5 93 23.38
11
14
20846 Interesting Selection   5 123 43.21
13
26
20970 Alia and Handsome Devil   5 391 30.43
17
12
20977 Car Game   5 36 38.89
14
14
21104 Jarin Loves New Task   5 43 37.35
17
17
21353 Avantgarde and Doughnut   5 19 45.90
21
34
21360 Suffix Equal Prefix   5 489 28.43
13
13
21414 Count The Indexes 2   5 41 18.11
37
24
21456 I Ken Bit Yu   5 117 30.99
9
21
21457 House Fence   5 143 27.93
9
21
21525 Red John is Back   5 315 53.58
6
17
21964 Golf Bot   5 81 35.75
34
27
22303 Mau-Mau   5 75 16.67
36
17
22531 Yo Yo Jagdish Singh   5 115 44.29
12
12
22535 String Play   5 46 43.44
21
21
22549 Divisors of factorial (extreme)   5 72 26.26
34
34
22553 Stack Overflow   5 131 26.43
12
10
22560 Valid Path   5 60 38.11
4
7
22561 Roger and tree III   5 25 11.34
27
27
23742 Dolan and Nephews   5 48 42.42
30
27

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