#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: wangyousi
	Language: C++
	Result: Accepted
	Time:4 ms
	Memory:2072 kb
****************************************************************/