/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */

/**
 *
 * @author Админ
 */
import java.io.*;

public class NewClass {
    public static void main(String[] args) {
        if(args.length != 2) {
            System.out.println("Wrong input");
            return; //вариант1 и продолжить.
        }
        try {
            StreamTokenizer in = new StreamTokenizer(new FileInputStream(args[0]));
            in.nextToken();
            int length = (int)in.nval;
            double sum = 0.0; //не нужно созавать массив
            for(int i = 0; i < length; i++,in.nextToken())
                sum +=in.nval;
            PrintWriter out = new PrintWriter(new FileWriter(args[1]));
            out.print(sum);
            out.close();
        } catch(Exception exc) {
            System.out.println("" + exc);
        }
    }
}