#!/usr/bin/python2

# copy and paste this script and
# save as addheader.py

import sys

while 1:
    # read stdin one line at a time
    line = sys.stdin.readline()
    
    # if no more input, or end of headers
    # exit the loop
    if not line or line == '\n': 
        break
        
    # if there is a non-blank line of input
    # write it to stdout
    sys.stdout.write(line)

# print the custom header    
print 'X-comment: This is my custom header'

# print a blank line to separate the headers
# from the email message body, per RFCs
print

# for data past the end of the original
# mail headers
while 1:
    line = sys.stdin.readline()
    if not line: 
        break
    sys.stdout.write(line)