package main

import "math"

type Coordinate struct {
	x, y int
}

type Path struct {
	start, end Coordinate
}

type Pond struct {
	vertices []Coordinate
}

type Map struct {
	paths []Path
	ponds []Pond
}

func (current Coordinate) distance(other Coordinate) float64 {
	dx := math.Abs(float64(current.x - other.x))
	dy := math.Abs(float64(current.y - other.y))
	return math.Sqrt(dx*dx + dy*dy)
}