#include <iostream>
#include <string>
#include <sstream>
#include <algorithm>
#include <cctype>

int main()
{
	std::string line;
	while (std::getline(std::cin, line))
	{
		line.erase(std::remove_if(line.begin(), line.end(), 
		           [](char ch) { return !std::isdigit(ch) && !std::isspace(ch) && ch != '.'; }), line.end());
        std::istringstream strm(line);
        double oneValue;
        while (strm >> oneValue)
           std::cout << oneValue << " ";
	}
}