Competitions

# PP1 Week 2 Contest 1

# Create a triangle

Given the lengths of three segments. Is it possible to construct from them the non-degenerate triangle? The triangle is non-degenerate if it has positive area.

#### Input

Three positive integers **a**, **b**, **c** (**1** ≤ **a**, **b**, **c** ≤ **1000**) - the lengths of three segments.

#### Output

Print **YES** if it's possible to create the non-degenerate triangle from the given segments and **NO** otherwise.

Input example #1

5 6 7

Output example #1

YES

Input example #2

3 7 4

Output example #2

NO