DALGLI0/zad1/Main.java

import java.util.Scanner;

public class Main {

    public static void main(String[] args) {
        int n;
        if(args.length == 0) {
            System.out.println("Proszę podać n ");
            Scanner scan = new Scanner(System.in);
            n = scan.nextInt();
        }
        else{
            n = Integer.parseInt(args[0]);
        }
        Ring ring = new Ring(n);
        System.out.println(ring.findRingDetails());
    }
}