import java.io.BufferedReader;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.IOException;

public class Main {
	
    public static void main(String[] args) throws FileNotFoundException, IOException {
        File f = new File(args[0]);
        BufferedReader read = new BufferedReader(new FileReader(f));
		
        String line;
        while ((line = read.readLine()) != null) {
			System.out.println(line.toLowerCase());
        }
    }
}