#include <iostream>
#include <cmath> // Để sử dụng sqrt,pow và abs
using namespace std;
int main(){
int x1, y1, x2, y2;
double r1, r2;
cin >> x1 >> y1;
cin >> x2 >> y2;
cin >> r1 >> r2;
// Tính khoảng cách giữa hai tâm đường tròn
double d = sqrt(pow(x1 - x2, 2) + pow(y1 - y2, 2));
if (d > r1 + r2 || d < abs(r1 - r2)) {
cout << "Khong co diem chung" << endl;
} else if (d == r1 + r2 || d == abs(r1 - r2)) {
cout << "Co 1 diem chung" << endl;
} else {
cout << "Co 2 diem chung" << endl;
}
return 0;
}
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