#!/usr/bin/python
import sys
import os

if(len(sys.argv) != 2):
	print("Usage: back.py <folder_name>")
else:
	wantedDirName = sys.argv[1]
	workingDir = os.getcwd()

	dirList = workingDir.split("/")
	dirList.reverse()

	foundWantedDir = False
	wantedPath = ""

	for folder in dirList:
		if(folder == wantedDirName or foundWantedDir):
			wantedPath = folder + "/" + wantedPath
			foundWantedDir = True

	print(wantedPath)