#include <algorithm>

int main() {
    int n;
    std::cin >> n;

    if (n <= 0) {
        std::cout << "苹果数量必须大于0" << std::endl;
        return 1;
    }

    std::vector<int> weights(n);
    for (int i = 0; i < n; ++i) {
        std::cin >> weights[i];
    }

    // 找到最小的苹果重量
    int min_weight = *std::min_element(weights.begin(), weights.end());

    // 计算去掉最小苹果后的总重量和数量
    double total_weight = 0.0;
    int count = 0;
    for (int weight : weights) {
        if (weight != min_weight) {
            total_weight += weight;
            ++count;
        }
    }

    // 计算平均重量并保留一位小数
    double average_weight = count > 0 ? total_weight / count : 0.0;
    printf("%.1f\n", average_weight);

    return 0;
}



/**************************************************************
	Problem: 1218
	User: zhenghaoxuan
	Language: C++
	Result: Compile Error
****************************************************************/