print("hello word!")
# for i in range(1, 10):
# for j in range(1, 10):
# print(j, "x", i, "=", i * j, "\t", end="")
# if i == j:
# print("")
# break
# _user = "zhang"
# _passwd = "123"
# for i in range(3):
# username = input("Username:")
# password = input("Password:")
# if username == _user and password == _passwd:
# print("welcome %s login..." % _user)
# break
# else:
# print("密码错误")
#
# # print("输入超过3次账号%s被限制了" % userName)
# print("输入超过3次账号被限制了")