ID NAME QUALITY USERS ACC % DIFFICULTY C I
32222 Ada and Panels   8 67
27
37
32579 Ada and Expenses   22 370
10
12
28304 Ada and Teams   24 854
15
15
29695 GO GOA GONE   25 888
12
13
34670 TWISTED ARRAY   203
2
14
37390 Colored Development   5 31
21
30
34945 Euler Puzzle   11 137
8
17
35552 Fibonacci Power Sum   5 35
17
30
14888 Good Predictions   17 1094
6
10
24979 She was in Love with BST   3 224
17
20
30454 Luke vs. Darth Vader   15 224
16
15
78 Marbles   68 8150
15
13
34649 Big team formation   2 8
26
1
34635 Team formation   2 99
17
1
37422 Recurrence Power Sum   4 28
45
46
18153 Robert Langdon & The Rule of Three   3 40
23
34
286 Selfish Cities   1 706
31
31
27043 Subset Pattern   32
1
1
37391 Development Colored   4 18
27
27
34973 Yet Another Subset Sum Problem   2 4
26
34
479 Permutation generator   1 133
21
17

#combinatorics

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

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