#!/usr/bin/env python3

import select
import os
from sys import stdin, stdout, argv

if stdin.isatty():
	path = os.environ['PATH']
else:
	path = stdin.readline()

filtered = []
parts = path.strip().split(':')
parts.extend(argv[1:])
for part in parts:
	if part not in filtered:
		filtered.append(part)
stdout.write(':'.join(filtered) + "\n")