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

// The main method must be in a class named "Main".
class Main {
    static int try34(int x){
    x=56;
     return x;
}
    public static void main(String[] args) {
 int x,y,t;

        System.out.println("Hello world!");
         
        int a = 7;
       // int b = 6;
 t= try34(a);
   System.out.println(t);

}


    }