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 */
package zadatak1;

import javax.swing.JOptionPane;

/**
 *
 * @author student
 */
public class Zadatak1 {

    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) {
        // TODO code application logic here
        String text = JOptionPane.showInputDialog("Unesite tekst: ");
        System.out.println(provera(text));
    }

    static String provera(String tekst) {
        String tacno = "OK";
        String netacno = "LOSE";
        for (int i = 0; i < tekst.length(); i++) {
            if (!((tekst.charAt(0) == ')') || (tekst.charAt(i - 1) == '('))) {
                tekst = tacno;
            } else {
                tekst = netacno;
            }
        }
        return tekst;
    }
}