#include <iostream>
#include <stack>
#include <cmath>
#include <vector>
#include <string.h>
#include <queue>
#include <stdio.h>
#include <iomanip>
#include <cstdio>
#include <algorithm>
#define int long long
using namespace std;
const int N = 1e5 + 10;
const int INF = 0x3f3f3f3f;
signed main()
{
	int a, b;
	while(cin >> a >> b && a != 0 && b != 0)
	{
		cout << a + b << endl;
	}
	return 0;
}

#include <iostream>
using namespace std;
int a, b;
int main()
{
	while(1)
	{
		cin >> a >> b;
                if(!a && !b)
                    return 0;
		cout << a + b << endl;
	}
	return 0;
}

# include <bits/stdc++.h>

using namespace std;
int main(){
	int n,a,b;
	scanf("%d %d",&a,&b);
	while(a!=0&&b!=0){
		cout<<a+b<<endl;
		scanf("%d %d",&a,&b);
	}
	return 0;
}

#include

using namespace std;

int main()

{

int a,b;

while(1)

{

    cin>>a>>b;
    
    if (a==0&&b==0) {
    
        break;
        
    }
    
    cout<<a+b<<endl;
    
}

return 0;

}

#include using namespace std; int main() { int a; int b; while(1) { cin >> a >> b; if(a == 0 && b == 0) { break; } cout << a + b << endl; } return 0; }

#include <iostream>
#include <bits/stdc++.h>
using namespace std;
const int N=1e7+10;
const int INF=0x3f3f3f3f;
int main()
{
	int a=1,b=1;
	while(a)
	{
		cin>>a>>b;
		if(a==0 && b==0)
		{
			return 0;
		}
		cout<<a+b<<"\n";
	}
}

#include <math.h> #include <stdio.h> #include using namespace std; int main() { int a,b; while(cin >> a >> b) { if(a == 0 && b == 0) break; cout << a + b << endl; } }

/陈儒乐/

#include<bits/stdc++.h>//网上查到的万能头//

using namespace std;

int main()

{

int a,b;

while(cin >> a >> b

    && !(a == 0 && b == 0))

{

    cout << a + b << endl;

}

}

#include<stdio.h> #include using namespace std; int main() { int a,b; while(cin>>a>>b&&!(a0&&b0)) cout<<a+b<<endl;

//int a,b;
//while(1)
//{
	//cin>>a>>b;
	//if(a==0&&b==0)
		//break;
	//cout<<a+b<<endl;
//}

}

#include

using namespace std;

int main() {

int n=1,a,b;

while(n==1){

cin>>a>>b;

if(a0&&b0) break;

cout<<a+b<<endl;

}

}