[JAVA] 백준 11399- ATM

https://www.acmicpc.net/problem/11399

11399번: ATM

 

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.Arrays;
import java.util.StringTokenizer;

public class Main {
    public static void main(String[] args) throws IOException {
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        int n = Integer.parseInt(br.readLine());

        int[] arr = new int[n];

        StringTokenizer st = new StringTokenizer(br.readLine());
        for (int i = 0; i < n; i++) {
            arr[i] = Integer.parseInt(st.nextToken());
        }
        Arrays.sort(arr);

        int sum = 0;
        int wait = 0;

        for(int i=0; i<n; i++){
            wait+=arr[i];
            sum+=wait;
        }
        System.out.println(sum);
    }
}