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

class Main
{
    public static void main (String[] args) throws java.lang.Exception
	{
        String s = "1 2 3 4";
        String[] s2;
        s2 = s.split(" ");
        int toplam=0,i;
        for(i=0;i<s2.length;i++){
            toplam+=Integer.parseInt(s2[i]);
        }
        System.out.println(toplam);
	}
}