#include <iostream>
#include <cmath>
#include <cstdlib>

using namespace std;

class Point{
private:
	double x,y,z;

public:
	Point():x(0), y(0), z(0){}
	Point(double a, double b, double c):x(a),y(b),z(c){}

	double dist(Point& p) const{
		return sqrt( pow(x,2)+pow(y,2)+pow(z,2));
	}

	
	
	double Dmanhattan(Point& p, other);

	

}









int main(){











return 0;
}