//package main
//注意不要添加包名称,否则会报错。
import java.io.*;
import java.util.*;
class Solution {
public int addab(int a, int b) {
return a+b;
}
}
public class Main
{
public static void main(String args[])
{
Scanner cin = new Scanner(System.in);
int a, b;
while(cin.hasNextInt())
{
a = cin.nextInt();
b = cin.nextInt();
Solution s = new Solution();
int c = s.addab(a, b);
System.out.println(c);
}
}
}