#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: wtq001
	Language: C++
	Result: Output Limit Exceed
****************************************************************/