#include<iostream>
#include<cstdio>
#include<cstring>
#include<string>
using namespace std;
long long int n,a[20010],b[20010];
int main()
{
	cin>>n;
	for(int i=1;i<=n;i++)
	{
		cin>>a[i]>>b[i];
		cout<<a[i]+b[i]<<endl;
	}
}