ID NAME QUALITY USERS ACC % DIFFICULTY C I
32222 Ada and Panels   3 19
27
42
32579 Ada and Expenses   16 232
13
14
28304 Ada and Teams   20 208
16
15
29695 GO GOA GONE   15 515
12
14
34670 TWISTED ARRAY   -2 75
3
10
34945 Euler Puzzle   7 83
8
14
35351 Curse the Recursion   1 25
1
1
35552 Fibonacci Power Sum   3 13
12
28
14888 Good Predictions   13 807
5
11
24979 She was in Love with BST   3 175
17
20
30454 Luke vs. Darth Vader   12 169
19
17
78 Marbles   56 6138
15
13
34649 Big team formation   1 2
17
1
34635 Team formation   2 2
17
1
18153 Robert Langdon & The Rule of Three   2 18
17
26
286 Selfish Cities   1 650
34
34
27043 Subset Pattern   29
1
1
34973 Yet Another Subset Sum Problem   1 2
17
34
479 Permutation generator   118
26
26

#combinatorics

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

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