#!/usr/bin/python3

import yaml
import demjson
import sys

files = sys.argv
if len(sys.argv) <= 1:
    files=(sys.stdin,)
else:
    files = (open(f) for f in sys.argv[1:])

for f in files:
    sys.stdout.write(demjson.encode(yaml.load(f), compactly=False))