import java.io.FileReader;
import java.io.LineNumberReader;
class LineViewer {
public static void main(String[] args) throws Exception {
LineNumberReader lnr = null;
FileReader fr = new FileReader(args[0]);
lnr = new LineNumberReader(fr);
String s;
while ((s = lnr.readLine()) != null)
System.out.println(lnr.getLineNumber() + ": " + s);
}
}