#include <stdio.h>

int counter = 0;

int f (int n)
{
	counter++;
    if (n==1)
        return 1;
    return 1+f(f(n-1));
}

int main(void) {
	
	for (int i=1; i < 20; i++)
	{
		counter = 0;
		printf("f(%d) = %d", i, f(i));
		printf(" counter = %d\n", counter);
	}
	return 0;
}