single_digit_numbers = input('please input:')
length = len(single_digit_numbers)
Sum = 0
i = 0
for i in range(0, length):
    Sum = Sum + int(single_digit_numbers[i])
print(Sum)

f4b5a06472a77850b8ac6b3aa12fba4f5ea58556
<mask token>

<mask token>
for i in range(0, length):
    Sum = Sum + int(single_digit_numbers[i])
print(Sum)

single_digit_numbers = input('please input:')
length = len(single_digit_numbers)
Sum = 0
i = 0
for i in range(0, length):
    Sum = Sum + int(single_digit_numbers[i])
print(Sum)
