ID NAME QUALITY USERS ACC % DIFFICULTY C I
32222 Ada and Panels   2 14
28
45
32579 Ada and Expenses   13 215
17
13
28304 Ada and Teams   15 168
18
15
29695 GO GOA GONE   13 447
11
13
34670 TWISTED ARRAY   42
4
5
34945 Euler Puzzle   6 68
5
9
35351 Curse the Recursion   1 21
1
1
35552 Fibonacci Power Sum   2 6
17
34
14888 Good Predictions   12 782
5
11
24979 She was in Love with BST   3 164
17
20
30454 Luke vs. Darth Vader   12 146
19
17
78 Marbles   53 5891
14
13
34649 Big team formation   1 2
17
1
34635 Team formation   2 1
17
1
18153 Robert Langdon & The Rule of Three   2 16
17
26
286 Selfish Cities   1 643
34
34
27043 Subset Pattern   28
1
1
34973 Yet Another Subset Sum Problem   1 0
17
34
479 Permutation generator   117
17
17

#combinatorics

Combinatorics is a branch of mathematics concerning the study of finite or countable discrete structures.

https://en.wikipedia.org/wiki/Combinatorics