[백준 Java] 브루트 포스 - 2798번: 블랙잭

 

 

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

public 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));
        StringTokenizer st = new StringTokenizer(br.readLine());

        int N = Integer.parseInt(st.nextToken());
        int M = Integer.parseInt(st.nextToken());
        int[] arr = new int[N];
        st = new StringTokenizer(br.readLine());
        int sum = 0;
        int max = 0;

        for (int i = 0; i < N; i++) {
            arr[i] = Integer.parseInt(st.nextToken());
        }

        for (int i = 0; i < N - 2; i++) {
            for (int j = i + 1; j < N - 1; j++) {
                for (int k = j + 1; k < N; k++) {
                    sum = arr[i] + arr[j] + arr[k];

                    if (sum == M) {
                        bw.write(String.valueOf(sum));
                        br.close();
                        bw.flush();
                        return;
                    }

                    if (sum < M && sum > max) {
                        max = sum;
                    }
                }
            }
        }

        bw.write(String.valueOf(max));
        bw.flush();
        bw.close();
    }
}