[백준] 4153번

import java.util.*;
import java.io.*;
import java.math.*;

public class Main {
   public static void main(String[] args) {
      Scanner sc = new Scanner(System.in);


      while (sc.hasNext()) {

         int A = sc.nextInt();
         int B = sc.nextInt();
         int C = sc.nextInt();

         if(A == 0 && B == 0 && C == 0) break;


         if((A * A + B * B) == C * C) {
            System.out.println("right");
         } else if(A * A == (B * B + C * C)) {
            System.out.println("right");
         } else if(B * B == (C * C + A * A)) {
            System.out.println("right");
         } else {
            System.out.println("wrong");
         }
      }
   }
}