/*

import java.util.Random;

public class random_1{

    public static void main(String[] args) {

        Random r=new Random();

        int a=r.nextInt();

        System.out.
    }
}
*/
//以下程序與上程序效果一樣
public class random_1{
    public static void main(String[] args) {
        int r=(int)(Math.random()*10);
        System.out.print(r);
    }
}