#include <iostream>
#include <cmath>
using namespace std;

int main()
{
  int n;
  while (cin >> n) {
    double xa, ya, ra, xb, yb, rb;
    cin >> xa >> ya >> ra >> xb >> yb >> rb;

    double d = sqrt((xa-xb)*(xa-xb) + (ya-yb)*(ya-yb));

    if (d > ra+rb)
      cout << "0" << endl;
    else if (d+ra < rb)
      cout << "-2" << endl;
    else if (d+rb < ra)
      cout << "2" << endl;
    else
      cout << "1" << endl;
  }
  return 0;
}