gistfile1.txt

#!/usr/bin/env python

import sys

lines = int(sys.stdin.readline().strip())

ciphertext = sys.stdin.read().split()

out = []

for i in xrange(len(ciphertext[0])):
    for j in xrange(lines):
        out.append(ciphertext[j][i])

print ''.join(reversed(out)).replace('_', ' ').replace('\\', '\n').strip()