1 #include <iostream>
 2 #include <cstdio>
 3 using namespace std;
 4 int main()
 5 {
 6     int N;
 7     while(cin>>N)
 8     {
 9         int    n=1;
10         int i=1;
11         while(n!=(N+1))
12         {
13             if(n<=N)
14             {
15                 n=n*2;
16                 i++;
17             }
18             else
19             {
20                 n=(n-N)*2-1;
21                 i++;
22             }
23         }
24         cout<<i<<endl;
25     }
26 }