#include<stdio.h>
int main(){
    int t,i,j;
    int a[100][2];
    int b[100]={0};
    scanf("%d",&t);
    if(t>=1&&t<=100){
    for(i=0;i<t;i++){
    for(j=0;j<2;j++){
    scanf("%d",&a[i][j]);
    b[i]+=a[i][j];}
    printf("%d\n",b[i]);
            }
    }
   return 0;
}