#!/usr/local/bin/python

# Hever Zsolt

import cgi





def Answer():

    print "Content-type: text/html\n\n"

    print "<HEADER>\n<TITLE> Mail</TITLE>\n</HEADER>\n"

    print "<BODY>\n"

    print '<BODY TEXT="#000000" BGCOLOR="#FFFFCC">'

    print '<FONT FACE="Arial,Helvetica"><FONT SIZE=+4>'	

    print "<BR> "

    form = cgi.FieldStorage()

    muv = form['D1'].value

    t1=int(form['T1'].value)

    t2=int(form['T2'].value)

    if muv == '+':

      e=t1+t2

    elif muv == '-':

      e=t1-t2

    elif muv == '*':

      e=t1*t2

    else: 

	if t2 != 0:

          e=t1/t2

        else:

          print 'HIBA : Nullaval valo osztas!'

          print '<BR>'

	  e = ' '

    print t1,muv,t2,' = ',e

    print "</font></BODY>"

	

Answer()