#include<bits/stdc++.h>
using namespace std;
int main()
{int a,b;
while(1){
cin>>a;
cin>>b;
cout<<a+b;	
	
	
	
	
} 


	return 0;
}

/**************************************************************
	Problem: 1001
	User: sf751616
	Language: C++
	Result: Output Limit Exceed
****************************************************************/