Editorial

Let $a, b, c$ be the sides of a triangle. A triangle is a right triangle if one of the following equalities holds:

$a^{2} = b^{2} + c^{2}$ (the hypotenuse is the side $a$ )
$b^{2} = a^{2} + c^{2}$ (the hypotenuse is the side $b$ )
$с^{2} = a^{2} + b^{2}$ (the hypotenuse is the side $с$ )

Algorithm realization

Read the input data until the end of the file.

while(scanf("%d %d %d",&a,&b,&c))
{

If there are three zeros, terminate the program.

  if (a + b + c == 0) break;

Check if the triangle is a right triangle. Depending on the result, print the answer.

  if ((a * a + b * b == c * c) ||
      (a * a + c * c == b * b) ||
      (b * b + c * c == a * a))
    puts("right");
  else
    puts("wrong");
}

Java realization

import java.util.*;

public class Main
{
  public static void main(String[] args)
  {
    Scanner con = new Scanner(System.in);
    while(con.hasNextInt())
    {
      int a = con.nextInt();
      int b = con.nextInt();
      int c = con.nextInt();

      if (a + b + c == 0) break;
      if ((a * a + b * b == c * c) ||
          (a * a + c * c == b * b) ||
          (b * b + c * c == a * a))
        System.out.println("right");
      else
        System.out.println("wrong");
    }
    con.close();
  }
}

Python realization

Read the input data until the end of the file.

while True:
  a, b, c = map(int, input().split())

If there are three zeros, terminate the program.

  if a + b + c == 0: break

Check if the triangle is a right triangle. Depending on the result, print the answer.

  if (a * a + b * b == c * c) or (a * a + c * c == b * b) or 
     (b * b + c * c == a * a):
    print("right");
  else:
    print("wrong")