public class CompositeStrategy : IStrategy
{
    private readonly IEnumerable<IStrategy> _strategies;

    public CompositeStrategy(IEnumerable<IStrategy> strategies)
        => _strategies = strategies;

    public State GetNewState(State state, UserInput userInput)
    {
        State accumulator = state;
        foreach (var strategy in _strategies)
        {
            accumulator = strategy.GetNewState(accumulator, userInput);
        }

        return accumulator;
    }
}