#include <stdio.h>
#include <cs50.h>
int main(void)
{
int n;
do
{
n = get_int("Start size: ");
}
while (n < 9);
int end;
do
{
end = get_int("End size: ");
}
while (end <= n);
int year = 0;
while (n < end)
{
n += (n/12);
year++;
}
printf("Years: %i\n", year);
}