#include <iostream>
#include <vector>
#include <algorithm>
#include <iomanip>

int main() {
    int n;
    std::cin >> n; // 读取苹果数量
    std::vector<int> apples(n); // 存储苹果重量
    for (int i = 0; i < n; ++i) {
        std::cin >> apples[i]; // 读取每个苹果的重量
    }
    
    int minWeight = *std::min_element(apples.begin(), apples.end()); // 找到最小重量
    int countMin = std::count(apples.begin(), apples.end(), minWeight); // 统计最小重量苹果的个数
    double totalWeight = 0;
    for (int weight : apples) {
        if (weight!= minWeight) {
            totalWeight += weight; // 计算去除最小重量苹果后的总重量
        }
    }
    
    double averageWeight = totalWeight / (apples.size() - countMin); // 计算平均重量
    std::cout << std::fixed << std::setprecision(1) << averageWeight << std::endl; // 输出结果，保留一位小数
    
    return 0;
}
/**************************************************************
	Problem: 1218
	User: zhenghaoxuan
	Language: C++
	Result: Accepted
	Time:17 ms
	Memory:2072 kb
****************************************************************/