package p4a;


public class MainArrayListStdGetCentre {
	public static void main(String[] args) {
		ArrayListStd<Integer> arrayList = new ArrayListStd<Integer>();
		int nbOperation = Integer.parseInt(args[0]);
		
		for (int i = 0; i < nbOperation; i++) {
			arrayList.ajout(0, i);
		}
		for (int i = 0; i < nbOperation; i++) {
			arrayList.acces((nbOperation/2)%2==0?nbOperation/2:(int)(nbOperation/2-0.5));
		}
	}
}