#include <bits/stdc++.h>
using namespace std;
int main(){
	int c=0; 
	float g=100;
	do{
		g=g/2;
		c++;
	}while(g>=0.5);
	cout<<c;
	
}


/**************************************************************
	Problem: 1062
	User: 15159808820
	Language: C++
	Result: Accepted
	Time:4 ms
	Memory:2072 kb
****************************************************************/