#include using namespace std; typedef long long int ll; typedef pair P; typedef vector VI; typedef vector VVI; #define REP(i,n) for(ll i=0;i<(n);i++) #define ALL(v) v.begin(),v.end() constexpr ll MOD=1000000007; constexpr ll INF=2e18; int main(){ int n; cin >> n; VI a(n); REP(i,n) cin >> a[i]; sort(ALL(a),greater()); ll ans=0, now=0, f=-1; REP(i,n){ if(now==i){ now=now*2+1; f++; } ans+=a[i]*f; } cout << ans << endl; return 0; }