import java.io.*;
import java.util.ArrayList;
import java.util.Scanner;
public class Main {

    public static void main(String[] args) throws Exception{
	File in = new File("adunare.in");
	File out = new File("adunare.out");
	PrintWriter out2 = new PrintWriter(out);
	ArrayList<Integer> result = new ArrayList<Integer>();
	try {
	    Scanner sc = new Scanner(in);
	    while (sc.hasNextLine()) {
		    int i = sc.nextInt();
		    System.out.println(i);
		    result.add(i);
	    }
	    sc.close();
	} 
	catch (FileNotFoundException e) {
	    e.printStackTrace();
	}
	System.out.println(result.get(0) + result.get(1));
	out2.println(result.get(0) + result.get(1));
	out2.close();
	
    }
    
}