#include<stdio.h>
int main(){
	double h=100.0;
	int n=0;
	while(h>=0.5){
		 h=h/2.0;
		 n++;
	}
	printf("%d",n);
	return 0;
}
/**************************************************************
	Problem: 1062
	User: admin
	Language: C
	Result: Accepted
	Time:4 ms
	Memory:1036 kb
****************************************************************/