reverse identifiers
#include <iostream>
using namespace std;
int reverseNumber(int n) {
int reversedNumber = 0, remainder;
while(n != 0) {
remainder = n%10;
reversedNumber = reversedNumber*10 + remainder;
n /= 10;
}
return reversedNumber;
}
int main() {
int n;
cin >> n;
for (int i = 0; i < n; i++) {
int a, b;
cin >> a >> b;
int aR = reverseNumber(a);
int bR = reverseNumber(b);
int r = aR + bR;
cout << reverseNumber(r) << endl;
}
return 0;
}