# name = "John"
# print("Hello, %s \n !" % name, "555")

# a = 1.2345

# print("%.2f" % a)

# b = 1245

# print("%x/%X" % (b, b))

# data = ["John", "Doe", 53.44]
# print(data[2])

# # reverse a string

# astring = "Hello world!"
# print(astring[::-1])

# m = True
# if m != True:
#     print("hahah")
# else:
#     print("wooooo")

for i in range(10):
    print(i)