C++ :

#include <cstdio>
#include <iostream>
using namespace std;
int main() {
	int T;
  	cin >> T;
  	while(T--) {
      int n, s, a, g = 0, b = 0;
      cin >> n;
      for(int i = 0; i < n; i++) {
      	cin >> s >> a;
        if(s == 0)
          	g += a;
       	else
          	b += a;
      }
      cout << g << " " << b << endl;
    }
  return 0;
}