public static long countInvestablePeriods(int[] price, int maxPrice, int minPrice) {
        int n = price.length;
        long count = 0;
        for (int i = 0; i < n; i++) {
            int max = price[i];
            int min = price[i];
            for (int j = i + 1; j < n; j++) {
                max = Math.max(max, price[j]);
                min = Math.min(min, price[j]);
                if (max == maxPrice && min == minPrice) {
                    count++;
                }
            }
        }
        return count;
    }