#!/usr/bin/env python
import sys
import urllib.parse

if not sys.stdin.isatty():
    url = sys.stdin.read().strip()
elif len(sys.argv) > 1:
    url = sys.argv[1]
else:
    url = input("Paste URL: ")

# Extract between ___ markers
start = url.find("___") + 3
end = url.find("___", start)

if start > 2 and end > 0:
    extracted = url[start:end]
    print(urllib.parse.unquote(extracted))
else:
    print("Could not find ___ markers")