Start.java (judge version)

package runners_judge;

public class Start

    {
    private boolean ready;
    private int runners;

    public Start(int r)
        {
        runners = r;
        ready = false;
        }

    public synchronized boolean isReady()
        {
        return ready;
        }

    public synchronized void setReady(Runner r)
        {
        if(r.getRunnerID() == runners - 1)
            {
            ready = true;
            notifyAll();
            }
        }
    }