JCHWRAND

import java.util*
public class stuff;
{
  public static void main(String [] args)
  {
    {
    int a = 45;
    int b = 20;
  }
     else{
    while ( b != 0)
    {
      int r = a % b;
      a = b;
      b = r;
    }//endloop
    System.out.println(b);
    }
    System.out.println(a);
  }
}