#include <stdio.h>

int main() {
    int n, a, b;
    scanf("%d", &n);

    while(n > 0){//n > 0可换成n != 0
        scanf("%d %d", &a, &b);
        printf("%d\n", a + b);
        n = n - 1;//可换成n--
    }

    return 0;
}