#include <bits/stdc++.h>
 
using namespace std;
 
int main () {
 
	char x[] = "00";
	for(int i = 1; i <= 20; i++){
		if(x[1] == '9'){
			x[1] = '0';
			x[0]++;
		}
		else{
			x[1]++;
		}
		char s[] = {x[0], x[1], '.', 'a'};
		freopen(x, "r", stdin);
		freopen(s, "w", stdout); 	
		int a , b;
		cin >> a >> b;
		cout << a + b;
	}
 
}