import java.io.*;

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