import java.awt.*;
//MELIANI SAMY (TP1)

public class Decapite{
	public static void main(String[] args) {
		boolean ihl1= GraphicsEnvironment.isHeadless();

		GraphicsEnvironment ihl2 = new GraphicsEnvironment();
		boolean yes = ihl2.isHeadlessInstance();
		if(ihl1){
			System.out.println("oui");
		}
	}
}