list of classical problems


ID NAME QUALITY USERS ACC % DIFFICULTY C I
2526 Decoding   9 1038 36.35
23
15
2817 Distinct Increasing Subsequences   9 793 24.56
22
26
2901 One Geometry Problem   9 1826 36.17
4
13
3195 Doors and Penguins   9 240 27.28
19
16
3937 Wooden Sticks   9 680 36.94
23
28
5451 Not So Flat After All   9 1125 42.70
11
10
6717 Two Paths   9 229 17.62
34
36
7108 Heptadecimal Numbers   9 1229 35.66
2
2
7586 Number of Palindromes   9 1390 46.54
13
13
8791 Dynamic LCA   9 478 29.25
27
26
8995 CANDY   9 1343 38.36
8
6
9385 Strictly not a Prime   9 366 28.59
17
12
9386 Re-Arrange II   9 272 44.42
21
17
9458 Ghosts having fun   9 217 12.05
16
24
10233 Magical Bridges   9 164 27.62
29
24
10366 Play with Dates   9 1428 38.69
16
6
10606 Balanced Numbers   9 609 28.19
23
17
10639 The Blind Passenger   9 1994 44.70
4
5
12262 Mirror Strings !!!   9 930 33.49
16
17
12366 Cantor   9 201 46.14
22
22
12810 Yet Another Multiple Problem   9 293 21.85
21
23
13117 White Hats   9 618 37.53
4
14
13643 BATMAN3   9 913 41.59
11
12
13707 SHAHBAG   9 1464 39.24
4
5
14168 Amazing Factor Sequence (medium)   9 228 29.55
21
24
15437 Tambourine   9 1495 49.92
6
2
17617 WHAT A CO-ACCIDENT   9 1500 60.56
2
11
17717 Gopu and Counting Bitwise Prime Numbers   9 222 19.79
21
17
18408 The Valentine Confession   9 578 28.49
15
21
19144 Digo plays with Numbers   9 724 40.75
9
11
22337 Stick values   9 117 30.56
22
24
22412 Divisors of factorial (hard)   9 183 46.65
22
22
22463 Smallest Number (medium)   9 70 21.42
29
25
23153 Equivalent Passwords   9 74 36.30
21
14
23515 The Last String Bender   9 137 28.12
19
11
24957 Petya Brother and Repairment of Roads   9 169 28.01
24
24
25179 Kaos   9 278 40.68
19
25
25311 Candies   9 1089 35.68
6
7
25690 Laser Beam   9 72 25.94
9
22
26344 Related or not   9 364 52.39
8
9
26575 Grand Reward   9 433 58.85
16
8
26928 The Crossover   9 104 16.83
22
16
27369 Gupta ji Birthday !!   9 127 32.68
19
19
28450 Ada and Path   9 107 30.76
17
29
28607 Descending Alternating Sums   9 135 38.12
10
16
30349 Strange Waca   9 44 20.18
17
22
30396 Easy GCD   9 99 31.59
8
8
30759 Ada and Species   9 123 26.14
27
31
30827 THE LAST SHOT   9 656 29.01
9
7
31099 Ada and CAPTCHA   9 175 16.99
20
16

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