#!/usr/bin/python3
#
import sys
import json

output = []
with open(sys.argv[1], 'r') as rh:
    i = 1
    for line in rh.readlines():
        try:
            data = json.loads(line)
        except json.decoder.JSONDecodeError as e:
            print("ERROR in Line %d" % i)
            raise 
        output.append(json.loads(line))
        i += 1
print(json.dumps(output, indent=4))