#include <iostream>
#include <algorithm>
#include <cmath>

int main() {
    std::vector<double> A;
    double x;

    while (std::cin >> x)
	A.push_back(x);

    if (A.size() == 0)
	return 0;
    
    double mean = 0;
    for(double x : A)
	mean += x;
    mean /= A.size();
    std::cout << "Mean: " << mean << std::endl;

    double var;
    if (A.size() > 1) {
	for(double x : A)
	    var += (x - mean)*(x - mean);
	var /= A.size() - 1;
    } else
	var = 0;

    std::cout << "Stddev: " << sqrt(var) << std::endl;

    std::sort(A.begin(), A.end());
    
    std::cout << "Min: " << A[0] << std::endl;
    std::cout << "25%: " << A[A.size()/4] << std::endl;
    std::cout << "Med: " << A[A.size()/2] << std::endl;
    std::cout << "75%: " << A[A.size()*3/4] << std::endl;
    std::cout << "Max: " << A[A.size() - 1] << std::endl;
}