print ("hello world !")
print ('hello  zyb!')
print ('I "said" do not touch it')

#print ("I "said" do not touch it")


print ("hello", int(25+30/6))

print ("it is ture that 3+2>5-7?")
print ("it is" , 3+2>5-7)

print ("Mary had l little  stone.")
print ("its fleece was  white as %s." % 'snow')

print ('.' * 10)


formatter="%r %r"

print (formatter %(1,2))