Egypt

A long time ago, the Egyptians discovered that a triangle with sides of length $3,4$ and $5$ had a right angle as its largest angle. You need to determine if other triangles have a similar property.

Input

Consists of several test cases, followed by a line containing $000$. Each test case includes three positive integers, each less than $30000$, representing the lengths of the sides of a triangle.

Output

For each test case, print a line containing "right" if the triangle is a right triangle, and "wrong" if the triangle is not a right triangle.

Examples