#!/usr/bin/env python3

import json
import select
import sys
import urllib.parse


def main(args=(), stdin=()):
    for arg in args:
        print(parse(arg))

    for line in stdin:
        print(parse(line))


def parse(params):
    qs = urllib.parse.parse_qs(params.strip(), keep_blank_values=True)
    obj = {}
    for key, value in qs.items():
        obj[key] = value[0] if len(value) == 1 else value
    return json.dumps(obj)


def get_stdin():
    found = select.select((sys.stdin,), (), (), 0.0)[0]
    return found[0] if found else ()


if __name__ == "__main__":
    main(sys.argv[1:], get_stdin())