#include<bits/stdc++.h>
using namespace std;
int main(){
	int a=100;
	float s=0;
	while(a>=0.5){
	     a=a/2;
	     s=s+1;
	}cout<<s;
}
/**************************************************************
	Problem: 1062
	User: tonghuawei
	Language: C++
	Result: Wrong Answer
****************************************************************/