import javax.swing.JOptionPane; 

public class Eserc1h{
    static public void main(String[] args){
	String ins = JOptionPane.showInputDialog("Inserisci una stringa");
	String first = ins.substring(0,1);
	String last = ins.substring(ins.length() - 1,ins.length());
	String middle = ins.substring(1,ins.length()-1);
	String res = last+middle+first;
	System.out.println(res);
	System.exit(0);
    }
}