#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;
    return 0;
}
/**************************************************************
	Problem: 1062
	User: cyp
	Language: C++
	Result: Accepted
	Time:3 ms
	Memory:2072 kb
****************************************************************/