#include<bits/stdc++.h>
using namespace std;
int main()
{
	float n=100,m=0; 
	while(n>0.5){
		n=n/2;
		m++;
	}
	cout<<m;
return 0;
}
/**************************************************************
	Problem: 1062
	User: houshanglin
	Language: C++
	Result: Accepted
	Time:4 ms
	Memory:2072 kb
****************************************************************/