include <bits/stdc++.h>

using namespace std;

int main() {

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

return 0;

}