include <bits/stdc++.h>

using namespace std; int main() {

int n, i, s = 0;
scanf("%d", &n);
int a[n], b[n];
for (i = 0; i < n; i++) {
	scanf("%d ", &a[i]);
	scanf("%d ", &b[i]);
}
for (int i = 0; i < n; i++) {
	s = a[i] + b[i];
	printf("%d\n", s);
}
return 0;

}