import java.io.*;

public class Main {
    public static void main (String[] args) throws IOException {
        File file = new File(args[0]);
        BufferedReader buffer = new BufferedReader(new FileReader(file));
        String line;
        while ((line = buffer.readLine()) != null) {
            line = line.trim();

            System.out.println(line.toLowerCase());
        }

        buffer.close();
    }
}
