list of classical problems


ID NAME QUALITY USERS ACC % DIFFICULTY C I
33 Trip   18 1988 26.37
25
16
39 Piggy-Bank   140 8115 35.46
14
16
63 Square Brackets   92 3854 56.84
14
18
64 Permutations   98 4318 51.97
12
20
66 Cross-country   38 4072 64.51
11
12
97 Party Schedule   250 8851 36.17
14
16
108 Decoding Morse Sequences   7 861 24.19
24
17
130 Rent your airplane and make money   88 3346 28.60
18
17
137 Partition   17 780 36.67
17
20
151 The Courier   38 1040 35.62
22
23
154 Sweet and Sour Rock   80 3411 51.26
14
17
181 Scuba diver   98 3808 25.96
18
18
207 Three-coloring of binary trees   16 875 35.88
20
17
237 Sums in a Triangle   -13 3576 42.40
28
10
277 City Game   16 1288 38.92
20
21
345 Mixtures   256 8873 36.39
17
21
346 Bytelandian gold coins   544 25752 25.15
11
12
365 Phidias   25 1211 47.21
13
21
388 Menu   7 347 18.88
25
16
394 Alphacode   577 22308 27.28
15
15
423 Assignments   242 4695 33.55
18
21
428 Particular Palindromes   5 492 32.02
22
24
676 Sorting is not easy   9 536 39.66
19
32
703 Mobile Service   6 976 22.18
23
24
740 Treats for the Cows   261 8526 42.64
13
14
757 Thermal Luminescence   121 39.26
1
1
1021 Aibohphobia   308 10622 36.17
12
17
1027 Fool the Police   25 1638 26.98
18
23
1031 Up Subsequence   2 727 32.58
15
10
1329 Matrix   6 410 17.22
28
26
1391 Summing to a Square Prime   16 1416 54.06
12
17
1459 The Secret of an Aerolite   8 260 43.53
24
26
1475 Play with Digit Seven   3 125 36.90
34
14
1702 Cleaning Robot   45 1558 34.20
28
20
1703 ACM (ACronymMaker)   52 1074 29.82
26
21
1710 Two Ends   115 3760 41.98
18
17
1847 No Change   37 1672 36.21
11
14
1871 Making A Budget   15 867 48.48
13
15
2007 Another Very Easy Problem! WOW!!!   17 760 39.04
13
28
2127 Rain   3 431 40.31
17
14
2176 Finding Seats   2 220 14.87
34
34
2416 Distinct Subsequences   94 3713 36.26
12
22
2530 Tiling a Grid With Dominoes   58 2399 64.97
16
23
2815 Increasing Subsequences   53 2152 28.11
15
22
2816 Common Subsequences   5 217 28.61
26
34
2856 Help Bob   6 273 31.92
21
23
2884 Martian Mining   87 2286 47.70
13
22
3379 String Shuffle   7 394 65.92
17
14
3380 Tourist   28 1076 38.36
19
31
3385 Yoda Goes Palindromic !   3 581 30.42
17
17

Most popular tags