11384 - Help is needed for Dexter

还是要重思考！

#include<bits/stdc++.h>
using namespace std;
int f(int n){
    return n==1?1:f(n/2)+1;
}
int main()
{
    int n;
    while(scanf("%d",&n)==1){
        printf("%d\n",f(n));
    }
    return 0;
}