import java.io.*;

class Demo {
    public static void main(String[] args) {
        BufferedReader in = null;
        int sum = 0;
        try {
            in = new BufferedReader(new FileReader(args[0]));
            String line;
            while ((line = in.readLine()) != null) {
                String nums[] = line.split(" ");
                for (int i = 0; i < nums.length; i++) {
                    int n = 0;
                    try {
                        n = Integer.parseInt(nums[i]);
                    } catch (NumberFormatException e) {
                        System.out.println("invalid number");
                    }
                    sum += n;
                }
            }
            System.out.println("The sum is " + sum);
            in.close();
        } catch (IOException e) {
            System.out.println(e);
        }
    }
}