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")