input = 1, answer = 1
input = 12, answer = 12
input = 22, answer = 22
input = 44, answer = 44
input = 123, answer = 9
input = 888, answer = 14
input = 1234, answer = 20
input = 6666, answer = 6666
input = 12345, answer = 19
input = 123456, answer = 8
input = 1234567, answer = 7
input = 12345678, answer = 18
input = 123456789, answer = 17
input = 1234567890, answer = 16
input = 12345678901, answer = 5
input = 123456789012, answer = 4
input = 1234567890123, answer = 15
input = 12345678901234, answer = 14
input = 123456789012345, answer = 3
input = 1234567890123456, answer = 2
input = 123456789012345678901234567890, answer = 4