using static System.Console;

​

public class Node<T> {

    public T Value { get; set; }

    public Node<T> Next { get; set; }

}

​

public class LinkedList<T> {

    private Node<T> head = null;

​

    public Node<T> Add(T value) {

        var node = new Node<T> {Value = value};

        if (head == null) head = node;

        else {

            var current = head;

            while (current.Next != null) current = current.Next;

            current.Next = node;

        }

        return node;

    }

​

    public T Remove(Node<T> node) {

        if (head == null) return node.Value;

        if (head == node) {

            head = head.Next;

            node.Next = null;

            return node.Value;

        }

        var current = head;

        while (current.Next != null) {

            if (current.Next == node) {

                current.Next = node.Next;

                return node.Value;

            }

            current = current.Next;

        }

        return node.Value;

    }

​

    public void Print() {

        var current = head;

        while (current != null) {

            WriteLine(current.Value);

            current = current.Next;

        }

    }

}

​

public class Program {

    public static void Main(string[] args) {

        var ll = new LinkedList<int>();

        var node1 = ll.Add(1);

        var node2 = ll.Add(2);

        var node3 = ll.Add(3);

        var node4 = ll.Add(4);

        var node5 = ll.Add(5);

        ll.Print();

        WriteLine();

        ll.Remove(node3);

        ll.Print();

    }

}