#include <iostream>
using namespace std;
int main() {
int iter;
cin >> iter;
int arr[2];
int sum[iter];
for(int i=0;i<iter;i++){
sum[i]=0;
}
for (int i=0; i<iter; i++) {
for (int n=0; n<2; n++) {
// Enter numbers
cin >> arr[n];
sum[i]+=arr[n];
}
}
for (int i=0; i<iter; i++) {
// Get the sum of numbers
cout << sum[i] << endl;
}
return 0;
}
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