#include<bits/stdc++.h>
using namespace std;
int main(){
	int a,b;
	while(cin>>a>>b){
		//if(a==-1) return 0;
		cout<<(a+b)<<'\n';
	}
	return 0;
}
/**************************************************************
	Problem: 1001
	User: chenxurui
	Language: C++
	Result: Accepted
	Time:14 ms
	Memory:2072 kb
****************************************************************/