import cgi
print("Content-Type: text/html")
print()
print("<h1>Welcome to web application</h1>")
print("<hr/>")
print("<h2>Using Input tags</h2>")
form = cgi.FieldStorage()
roll = form.getvalue('roll')
name = form.getvalue('name')
print"<h2>Hello %s %s</h2>"%(roll,name)