#!/usr/bin/env python3;
import Utils
import sys

# Begin Main
x = Utils.stoiWithDefault(sys.argv[1], 0)
for case in Utils.switch (x) :
	if case(1) :
		print("One")
		break
	if case(2) :
		print("Two")
		break
	if case(3) : pass
	if case(4) :
		print("Three or Four")
		break
	if case() :
		print("Just don't know!")
		break