8664蛋糕的美味值

8664蛋糕的美味值

⭐️难度：中等
🌟考点：枚举
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import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in );
        int n = sc.nextInt();
        int k = sc.nextInt();
        int[] a = new int[n];
        for (int i = 0; i < n; i++) {
            a[i] = sc.nextInt();
        }
        long ans = 0;
        for(int i =0;i<=(1<<n)-1;i++){
            long res = 0;
            for(int j = 0;j<n;j++){
                if((i>>j) % 2 == 1){
                    res += a[j];
                }
            }
            if(res < k){
                ans = Math.max(ans,res);
            }
        }
        System.out.println(ans);
    }
}

🍎笔记