public class Euclid {

   public static void main (String[] param) {
      int m=15;
      int n=6;
      if (param.length > 1) {
         m=Integer.parseInt (param [0]);
         n=Integer.parseInt (param [1]);
      }
      System.out.println ("SYT (" + m + ", " + n + ") = " + syt (m, n));
   } // main

   public static int syt (int a, int b) {
      while (b != 0) {
         int j22k = a % b;
         a = b;
         b = j22k;
      }
      return a;
   } // syt

} // Euclid