#!/usr/bin/env python

import json, sys, time

def isint(x):

    try:

        int(x)

        return True

    except:

        return False

if len(sys.argv) > 2 and isint(sys.argv[1]) and isint(sys.argv[2]):

    sys.argv.pop(1)

count = int(sys.argv[1])

for n in sys.argv[2:]:

    print '%s:' % n

    obj = json.load(open(n))

    start = time.time()

    for i in xrange(count):

        json.dumps(obj)

    end = time.time()

    print '  %d good, %gs' % (count, end - start)