Triangle

Very easy

Execution time limit is 1 second

Runtime memory usage limit is 128 megabytes

Three positive integers $a, b$ and $c$ are given. Print the sum of the given numbers if there exists a triangle with side lengths $a, b$ , $c$ , and "No" otherwise.

Input

Three positive integers $a, b$ и $c$ .

Output

Print the sum of the given numbers if there exists a triangle with side lengths $a, b$ , $c$ , and "No" otherwise.

Examples

Input #1

Answer #1

Input #2

Answer #2

Submissions 14K

Acceptance rate 41%