list of classical problems (unsolved)


ID NAME QUALITY USERS ACC % DIFFICULTY C I
8409 Favorite Sub Hair   3 99 39.44
26
26
8750 Wordplay   4 99 26.48
17
34
10576 Exclusive Security   -1 99 26.77
12912 Saving BOB   3 99 38.31
14
17
19382 Stock   2 99 32.39
26
34
27198 Ballons Revisited   4 99 21.33
1
23
160 Choosing a Palindromic Sequence   98 32.39
17
17
2002 Random Number Generator   98 40.62
10612 Funny Areas   3 98 33.33
34
34
12557 Basic Routines   98 19.23
18510 Ross generates Data   4 98 17.18
34
26
22329 Chicks   8 98 38.70
19
19
25458 Boxes   4 98 38.02
38
38
28784 IIITM Student   6 98 53.29
13
15
39786 Selling Greeting Cards   8 98 25.62
10
11
697 Matrix Words   97 24.43
1
1
7322 Prime Pattern   1 97 36.16
23
17
9693 Revenge of Fibonacci   2 97 31.16
34
34
9890 Piece it together   97 24.14
10640 The Wild Wizard   97 26.76
1
1
10919 I Hate Parenthesis   97 30.21
17
1
15914 Update Sub-Matrix & Query Sub-Matrix   2 97 36.11
23
28
19292 Complicated Calculations   97 51.57
1
1
19975 Amazing Prime Sequence (hard)   5 97 44.55
39
45
20654 Interesting Subset   5 97 23.84
11
14
34480 Profiling   8 97 28.64
8
8
204 Sleepwalker   96 26.01
1
1
9137 Pyramid Sums   96 35.60
34
17
10519 K12-Bored of Suffixes and Prefixes   3 96 43.49
26
26
12368 Emma s Domino   96 32.19
1
17
14435 Decipher the AMSCO cipher   2 96 59.18
17
22549 Divisors of factorial (extreme)   5 96 26.15
34
36
29448 Coincidence   4 96 32.42
1
17
34183 Tower of Hanoi Movement - Hard   3 96 27.27
9
1
1477 Play with a Tree   95 15.49
17
50
6479 The Very Greatest Common Divisor   4 95 10.11
21
13
6489 Finding the Kth Prime (Hard)   6 95 10.45
38
38
6773 Dinostratus Numbers   1 95 18.13
17
17
7760 Kids’ Wishes   1 95 31.93
34
1
8549 BST again   1 95 17.08
17
34
11909 C You and Me   4 95 45.36
21
21
12321 NSquare Sum ( Easy )   3 95 60.22
1
13
12916 MMM   4 95 18.85
24
27
13469 FOREVER ALONE   7 95 39.58
24
24
15963 Help Donn   1 95 42.42
1
9
21284 Can You Make It Empty 3   6 95 31.16
15
20
32125 Flirtatious Verma   2 95 23.28
17
17
34624 Longest palindrome with no adjacent duplicates   2 95 31.59
28
17
1480 Let us count 1 2 3   94 16.28
6
39
3865 Reljef   3 94 39.09
26
17

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