Competitions

# 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 (1a, b, c1000) - 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.

Time limit 1 second
Memory limit 128 MiB
Input example #1
5 6 7

Output example #1
YES

Input example #2
3 7 4

Output example #2
NO