Ladders
Very easy
Execution time limit is 1 second
Runtime memory usage limit is 64 megabytes
Ladder is a set of cubes in which each over the top layer contains fewer blocks than the previous one.
Count the number of ladders that can be built from n blocks.
Input
One integer n (1 ≤ n ≤ 100).
Output
Print the required number of ladders.
Examples
Input #1
Answer #1
Submissions 3K
Acceptance rate 34%