import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Comparator;

public class Main {

	static BufferedReader reader;
	final static boolean MODE_DEBUG = false;
	static int[] read_line_int;
	static int read_line_int_ptr;
	static long[] read_line_long;
	static int read_line_long_ptr;
	static String[] read_line;
	static int read_line_ptr;
	//static field here
	
	public static void main(String[] args) {
		// TODO Auto-generated method stub
		reader = new BufferedReader(new InputStreamReader(System.in));
		//code here
		int N = readInt();
		Integer[] a = readLineInteger();
		Arrays.sort(a,new Comparator<Integer>() {

			@Override
			public int compare(Integer o1, Integer o2) {
				// TODO Auto-generated method stub
				return o2-o1;
			}
			
		});
		long ans = a[0];
		/*Person[] ps = new Person[N];
		ps[0] = new Person();
		ps[0].A = a[0];
		ps[1] = new Person();
		ps[1].A = a[1];
		//ans=a[0]
		if(N==2) {
			print(ans);return;
		}
		ps[2] = new Person();
		ps[2].A = a[2];
		ps[0].next = ps[1];
		ps[1].next = ps[2];
		ps[2].next = ps[0];
		ps[0].prev = ps[2];
		ps[1].prev = ps[0];
		ps[2].prev = ps[1];
		ans+=a[1];
		
		for(int i=3;i<N;i++) {
			Person pp = ps[i-2];
			Person n = new Person();
			n.A = a[i];
			if(pp.prev.A>pp.next.A) {
				//pp.prev - n - pp
				ans+=Math.min(pp.prev.A,pp.A);
				pp.prev.next = n;
				n.prev = pp.prev;
				n.next = pp;
				pp.prev = n;
			}else {
				//pp - n - pp.next
				ans+=Math.min(pp.next.A,pp.A);
				pp.next.prev = n;
				n.next = pp.next;
				n.prev = pp;
				pp.next = n;
			}
			ps[i] = n;
		}*/
		for(int i=1;i<N-1;i++) {
			ans+=a[(i+1)/2];
		}
		print(ans);
	}
	
	//functions here
	//note that all methods should be STATIC


	private static <T> int arraySearch(T needle, T[] heystack) {
		for(int i=0;i<heystack.length;i++) {
			if(needle.equals(heystack[i])) {
				return i;
			}
		}
		return -1;
	}
	private static int[] sort(int[] base) {
		int[] copy = array_copy(base);
		Arrays.sort(copy);
		return copy;
	}
	private static int[] array_copy(int[] base) {
		int[] copy = new int[base.length];
		for(int i=0;i<base.length;i++) {
			copy[i] = base[i];
		}
		return copy;
	}
	private static int[] asArray(ArrayList<Integer> ints) {
		int[] intlist = new int[ints.size()];
		for(int i=0;i<intlist.length;i++) {
			intlist[i] = ints.get(i);
		}
		return intlist;
	}
	private static int readInt() {
		if(read_line_int==null||read_line_int_ptr==read_line_int.length) {
			read_line_int = readLineInt();
			read_line_int_ptr=0;
		}
		return read_line_int[read_line_int_ptr++];
	}
	private static long readLong() {
		if(read_line_long==null||read_line_long_ptr==read_line_long.length) {
			read_line_long = readLineLong();
			read_line_long_ptr=0;
		}
		return read_line_long[read_line_long_ptr++];
	}
	private static String readString() {
		if(read_line==null||read_line_int_ptr==read_line.length) {
			read_line = readLine();
			read_line_ptr=0;
		}
		return read_line[read_line_ptr++];
	}
	private static String[] readLine(){
		try{
			return reader.readLine().split(" ");
		}catch(Exception e){
			e.printStackTrace();
			return new String[]{e.getMessage()};
		}
	}
	private static int[] readLineInt(){
		try{
			String[] s = readLine();
			int[] ints = new int[s.length];
			for(int i=0;i<ints.length;i++) {
				ints[i] = Integer.parseInt(s[i]);
			}
			return ints;
		}catch(Exception e){
			e.printStackTrace();
			return null;
		}
	}
	private static Integer[] readLineInteger(){
		try{
			String[] s = readLine();
			Integer[] ints = new Integer[s.length];
			for(int i=0;i<ints.length;i++) {
				ints[i] = Integer.parseInt(s[i]);
			}
			return ints;
		}catch(Exception e){
			e.printStackTrace();
			return null;
		}
	}
	private static long[] readLineLong(){
		try{
			String[] s = readLine();
			long[] ints = new long[s.length];
			for(int i=0;i<ints.length;i++) {
				ints[i] = Long.parseLong(s[i]);
			}
			return ints;
		}catch(Exception e){
			e.printStackTrace();
			return null;
		}
	}
	private static byte[] readLineByte(){
		try{
			String[] s = readLine();
			byte[] bytes = new byte[s.length];
			for(int i=0;i<bytes.length;i++) {
				bytes[i] = Byte.parseByte(s[i]);
			}
			return bytes;
		}catch(Exception e){
			e.printStackTrace();
			return null;
		}
	}
	private static char[] readLineChar(){
		try{
			String[] s = readLine();
			char[] chars = new char[s.length];
			for(int i=0;i<chars.length;i++) {
				chars[i] = (char)Integer.parseInt(s[i]);
			}
			return chars;
		}catch(Exception e){
			e.printStackTrace();
			return null;
		}
	}
	private static void print(Object o){
		System.out.println(o);
	}
	private static void print(){
		System.out.println();
	}
	private static void printd(Object o){
		if(MODE_DEBUG)System.err.println(o);
	}
	private static void printd(){
		if(MODE_DEBUG)System.err.println();
	}
}

class Person{
	public int A;
	public Person next;
	public Person prev;
}


Measured memory_bytes: 62808