import java.util.*;
import java.lang.*;

class MyThread implements Runnable{
    public void run() {
        try{
            Thread.sleep(500);
        }catch(Exception e){}
        System.out.println("thread");
    }
}

class Main{
    public static void main (String[] args) throws java.lang.Exception{
        new Thread(new MyThread()).run();
        System.out.println("main");
    }
}