#include <stdio.h>

int main() {
    int a, b;
    scanf("%d",&a);
    int x[a];
    int m[a];
    int i = 0;
    while(i<a)
    {
        scanf("%d %d",&x[i],&m[i]);
        printf("%d\n",x[i]+m[i]);
        i++;
    }

    return 0;
}