#include<bits/stdc++.h>
using namespace std;
int main(){
	float n=100,h=0;
	while(n>=0.5){
		n=n/2;
		h++;
	}
	cout<<h;
}
/**************************************************************
	Problem: 1062
	User: hongjiaming
	Language: C++
	Result: Accepted
	Time:3 ms
	Memory:2072 kb
****************************************************************/