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

class Punkt{
  public:
    double x, y;
	double kaugusNullist(){
		return sqrt(x*x+y*y);
	}
	double kaugusPunktist(Punkt p){  //eukleidiline
		double dx=p.x-x; double dy=p.y-y;
		return sqrt(dx*dx+dy*dy);
	}
	double manchesteriKaugus(Punkt p){ //mööda risti olevaid tänavaid
		double dx=p.x-x; double dy=p.y-y;
		if(dx<0){dx=-dx;}
		if(dy<0){dy=-dy;}
		return dx+dy;
	}
};

int main(void){
	Punkt p1, p2;
	p1.x=4; p1.y=2;
	p2.x=3; p2.y=4;
	cout << p2.x << endl;
	cout << p2.kaugusNullist() << endl;
	cout << p1.kaugusPunktist(p2) << endl;
	cout << p1.manchesteriKaugus(p2) << endl;
	return 0;
}