#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: houshanglin
	Language: C++
	Result: Output Limit Exceed
****************************************************************/