11854 - Egypt

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.

Sample Input

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

Output for Sample Input

right
wrong
right

Solution: 

#include <stdio.h>

int main(){
 static int A, B, C, D; 
 while(scanf("%d %d %d", &A, &B, &C) == 3 && (A || B || C)){  
  if(A >= B){
   if(A > C){
    D = A;
    A = C;
    C = D;
   }
  }else if(B > C){
   D = B;
   B = C;
   C = D;
  } 
   
  if(A*A+B*B == C*C)
   printf("right\n");
  else
   printf("wrong\n");   
 }
 return 0;
}