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);
	}
    }
}