#!/usr/bin/env python3
import json
import fileinput
logs = []
#import sys
#with open(sys.argv[1]) as f:
# for line in f.read().strip().split('\n'):
# logs.append(json.loads(line))
for line in fileinput.input():
try:
logs.append(json.loads(line.strip()))
except:
print('Skipping line: {}'.format(line))
for i in logs:
if (type(i['MESSAGE']) == list):
msg = ''.join(chr(j) for j in i['MESSAGE'])
else:
msg = i['MESSAGE']
print(msg)