#include<iostream>

using namespace std;

int main(void)
{
    int a,b,s=0;
    while(ture)
    {
    cin>>a>>b;
    s=a+b
    cout<<s<<endl;
    }

    return 0;   
}
/**************************************************************
	Problem: 1001
	User: wtq001
	Language: C++
	Result: Compile Error
****************************************************************/