//no package name
//import when necessary
import java.util.Scanner;
//it has to be Main class
public class Main {
public static void main(String[] args){
Scanner input = new Scanner(System.in);
//Wrong answer when using while(true)
while(input.hasNext()){
int a = input.nextInt(), b = input.nextInt();
System.out.println(a+b);
}
}
}