[Java] 백준 11399 ATM

11399 ATM 문제 링크

문제

#1

import java.awt.*;
import java.io.*;
import java.util.*;

class Main {
    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 N = Integer.parseInt(br.readLine());
        StringTokenizer st = new StringTokenizer(br.readLine());

        ArrayList<Integer> arr = new ArrayList<>();
        for(int i=0; i<N; i++) {
            arr.add(Integer.parseInt(st.nextToken()));
        }
        Collections.sort(arr);
        int result = 0;
        int a = 0;
        for(int i=0; i<N; i++) {
            a += arr.get(i);
            result += a;
        }

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

• 성공!