#!/usr/bin/python
# TYPE:sciencemath
# DESC:Distance from lightning calculator.

import sys

unitPerSec = {"feet":1116.43701, "yards":372.145669, "miles":0.211446403, "meters":340.29, "kilometers":0.34029}
unitTypes = unitPerSec.keys()
unitIDs = range(len(unitTypes))


def secsToUnit(seconds, units):
	return seconds * 0.211446403

units = []

if len(sys.argv) > 1:
	seconds = float(sys.argv[1])
	if len(sys.argv) == 2:
		units = ["miles"]
	else:
		for arg in sys.argv[2:]:
			if arg in unitTypes:
				units.append(arg)
else:
	seconds = float(raw_input("How many seconds from flash to boom?: "))
	print "What unit of output?"
	for num in unitIDs:
		print num, unitTypes[num].capitalize()
	requestedIDs = str(raw_input("Number(s) of unit: ")).split()
	for num in requestedIDs:
		if int(num) in unitIDs:
			units.append(unitTypes[int(num)])

print "Distance from lightning:"
for unit in units:
	if unit in unitTypes:
		print unitPerSec[unit] * seconds, unit