#!/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()