def show(x, y):
print('<tr><td>%s<td>%s<td>%s' % (x, y, ('Same' if x == y else 'Different')))
print('<html>')
print('<head>')
print('<link rel="stylesheet" type="text/css" href="../teaching.css">')
print('</head>')
print('<body>')
print('<table border><tr><td>X<td>Y<td>X == Y')
show('abc', 'abc')
show('xyz', 'x' + 'y' + 'z')
print('</table>')
print('</body>')
print('</html>')