/******************************************************************************
 * This program computes the sum of a list of float values on STDIN.
 * 
 * Copyright © 2016 Richard Lesh.  All rights reserved.
 *****************************************************************************/

#undef NDEBUG

#include "Utils.hpp"
#include <fmt/format.h>
#include <iostream>
#include <string>

using namespace Utils;
using namespace std;

int main(int argc, char **argv) {
    string line;
    double d;
    double total = 0;

    while (getline(cin, line)) {
        line = Utils::trim(line);
        try {
            d = stod(line);
            total += d;
        } catch (...) {
            if (line.length() > 0) {
                cout << "Can't parse input: " << line << endl;
            }
        }
    }

    cout << fmt::format("{0:g}", total) << endl;
    return 0;
}