Problems
Triangle
Triangle
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 "\textbf{No}" otherwise.
\InputFile
Three positive integers $a, b$ и $c$.
\OutputFile
Print the sum of the given numbers if there exists a triangle with side lengths $a, b$, $c$, and "\textbf{No}" otherwise.
Input example #1
3 2 4
Output example #1
9
Input example #2
3 2 7
Output example #2
No