# a = int(input("First_number"))
# b = int(input("Second_number"))


def add(a, b):
    result = a + b
    return result


def sub(a, b):
    result = a - b
    return result


def mult(a, b):
    result = a * b
    return result


def div(a, b):
    result = a / b
    return result

# def factorial(a, b):
#     the_number = a = b
#     b = 1
#     while a > 1:
#         b *= a
#         a = a - 1
#     print(the_number, "!", "=", b)
#
#
# print(factorial(a, b))
