Brackets (2)
Very easy
Execution time limit is 2 seconds
Runtime memory usage limit is 64 megabytes
Print all correct bracket expressions of length n, consisting of round and square brackets.
Input
One even integer n (1 ≤ n ≤ 14).
Output
Print each expression on a separate line.
Examples
Input #1
Answer #1
Submissions 1K
Acceptance rate 31%