2021全国高校计算机能力挑战赛（初赛）Java试题四

某游戏公司设计了一个奖励活动，给N个用户（1<=N<=10^7）连续编号为1到N，依据用户的编号S发放奖励。

import java.util.ArrayList;
import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        int N = scanner.nextInt();
        int L = scanner.nextInt();
        int x = scanner.nextInt();
        int y = scanner.nextInt();
        int z = scanner.nextInt();
        int res = 0;
        ArrayList arr = new ArrayList<>();
        for (int i = 1; i <= N - L + 1; i++) {
            int currentRes = 0;
            for(int k = i ; k <= L + i-1 ; k++) {
                arr.add(k);
            }
            currentRes = getCards(arr, x, y, z);
            res = Math.max(res, currentRes);
            arr.clear();
        }
        System.out.println(res);
    }

    public static int getCards(ArrayList arr, int x, int y, int z) {
        int res = 0;
        for (int i = 0; i < arr.size(); i++) {
            res += getCard(arr.get(i), x, y, z);
        }
        return res;
    }

    public static int getCard(int n, int x, int y, int z) {
        if (n % (x * y * z) == 0) {
            return 5;
        } else if (n % (x * y) == 0 || n % (y * z) == 0 || n % (x * z) == 0) {
            return 3;
        } else if (n % x == 0 || n % y == 0 || n % z == 0) {
            return 1;
        } else {
            return 0;
        }
    }
}