can anyone answer this question I will give a like definetly thanks in advance

Let's define a Beautiful Function F(x) in such a way Add 1 to the value of x. if the result of addition contains any trailing zeros then remove them all Examples: F(11) = 12 F(19) = 2 (20 -> 2) F(99) = 1 (100 -> 10 -> 1) Let's define a number to be reachable from x, if we can apply the Beautiful Function some number of times(possibly zero) to x and get that number as result. Ex. 102 is reachable from 10099 as (F(F(10099))) = F(101) = 102 You are given a number N. Calculate how many numbers are reachable from N. Input Format The first line contains an integer N, denoting the given number. Constraints 1