sumOfMins.java

import java.util.*;
public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);

        int n = sc.nextInt();
        int[] array = new int[n];
        int sum = 0;

        for (int i = 0; i < n; i++) {
            array[i] = sc.nextInt();
        }

        for (int i = 0; i < n; i++) {
            for (int j = i + 1; j < n; j++) {
                sum += Math.min(array[i], array[j]);
            }
        }
        System.out.println(sum);
    }
}