#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: lijinkai
	Language: C++
	Result: Accepted
	Time:13 ms
	Memory:2072 kb
****************************************************************/