Recursion - 1

Very easy

Execution time limit is 1 second

Runtime memory usage limit is 128 megabytes

Implement the recursive function:

f (n) = {0, n = 0 f (n - 1) + n, n > 0

Input

One integer $n (0 \leq n \leq 1000)$ .

Print the value of $f (n)$ .

Input #1

Answer #1

Submissions 9K

Acceptance rate 63%