#include <stdio.h>
#include<iostream>
using namespace std;
const long long MAX=1e16;
int main() {
int a,b,n,k=3;
scanf("%d", &n);
for(long long i=1;i<=MAX;++i) k=max(k,n);
for (int i = 1; i <= n; i++) {
scanf("%d%d\n",&a,&b);printf("%d\n",a+b);
}
return 0;
}