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#!/usr/bin/env python
# Copyright 2008 Nanorex, Inc. See LICENSE file for details.
"""
Find the length of a vector, given the coordinates of the two ends.
The 2D vectors are offset by a constant Z amount, and one is rotated
by a constant angle.
"""
import sys
import math
dtheta = -36.0 * math.pi / 180.0
s = math.sin(dtheta)
c = math.cos(dtheta)
while True:
line = sys.stdin.readline()
if (not line):
break
splitLine = line.split()
x1 = float(splitLine[0])
y1 = float(splitLine[1])
x2i = float(splitLine[2])
y2i = float(splitLine[3])
x2 = x2i * c - y2i * s
y2 = x2i * s + y2i * c
dx = x1 - x2
dy = y1 - y2
dz = 0.318
length = math.sqrt(dx * dx + dy * dy + dz * dz)
print "(%f %f) -> (%f %f) %6.2f" % (x1, y1, x2, y2, length * 1000)
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