#include<bits/stdc++.h>
using namespace std;
int main(){
    int a,b;
    while(cin>>a>>b)
        cout<<a+b<<endl;
}
/**************************************************************
	Problem: 1001
	User: yuzhiboyou
	Language: C++
	Result: Accepted
	Time:11 ms
	Memory:2072 kb
****************************************************************/