#include<bits/stdc++.h>
using namespace std;
int main(){
	int a=0;
	float n=100;
	do{
		n=n/2.0;
		a++;
		
	}while(n>0.5);
	cout<<a;
}

/**************************************************************
	Problem: 1062
	User: caiqiaoxi
	Language: C++
	Result: Accepted
	Time:3 ms
	Memory:2072 kb
****************************************************************/