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