[백준 11399] ATM

문제

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

11399번: ATM

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내가 작성한 코드

import java.io.*;
import java.util.ArrayList;
import java.util.StringTokenizer;

public class qor11399 {
    public static void main(String[] args) throws IOException{
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        BufferedWriter bw = new BufferedWriter(new OutputStreamWriter(System.out));

        int num = Integer.parseInt(br.readLine());
        StringTokenizer st = new StringTokenizer(br.readLine());
        ArrayList<Integer> time = new ArrayList<>();

        for(int i = 0; i<num; i++){
            time.add(Integer.parseInt(st.nextToken()));
        }

        time.sort(null);

        int result = 0;

        for(int i = 0; i<num; i++){
            int t = 0;

            if(i == 0){
                result += time.get(i);
            }
            else{
                while(t<=i){
                    result += time.get(t);
                    t++;
                }
            }
        }

        bw.write(result+"");
        bw.close();
    }
}