#include<bits/stdc++.h> using namespace std; int main() { double n,h,s=0,m; cin>>n; h=n; m=n; for(int i=1;i<=n;i++){ s=s+2*h; h=h/2; } s=s-m; printf("%.3f\n",s); printf("%.3f\n",h); return 0; }