class Point{
int x;
int y;
Point(int x,int y){
this.x=x;
this.y=y;
}
int distance (Point b){
return Math.sqrt((this.x-b.x)*(this.x-b.x)+(this.y-b.y)*(this.y-b.y));
}
public static void main(String[]args){
Point p1=new Point(2,2);
Point p2=new Point(5,6);
System.out.println(p1.distance(p2));
}
}