import java.util.*;

class ASC

{

static int count(int num) //num=0

{

if(num==0)//0==0(f)

return 0;

else

return 1+count(num/10);1/10

}

public static void main(String args[])

{

int num=12345;

int result=count(num);//5

System.out.println(result);//5

}

}