#include<bits/stdc++.h>
using namespace std;
int main(){
	int a,b;
	while(1){
		cin>>a>>b;
	cout<<a+b<<endl;
	return 0;
	}
	
}
/**************************************************************
	Problem: 1001
	User: tangkaixuan
	Language: C++
	Result: Wrong Answer
****************************************************************/