题目描述

Problem A: Egypt

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

The Input

Input represents several test cases, followed by a line containing 0 0 0. Each test case has three positive integers, less than 30,000, denoting the lengths of the sides of a triangle.

The Output

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

样例 1

输入

6 8 10
25 52 60
5 12 13
0 0 0

输出

right
wrong
right

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题目来源：Waterloo October 2, 2010；FPS 共享题包，题包内第 1 题。保留原作者与原赛事署名。