using System;
using System.Linq;

public abstract class AbstractValidator<T> {
}

public class CreateTripValidator : AbstractValidator<int>
{}
public class CancelTripValidator : AbstractValidator<string>
{}

public class Test
{
	public static void Main()
	{
		var validatorType = typeof(AbstractValidator<>);
		Console.WriteLine(string.Join(",", validatorType.Assembly
			.GetTypes()
			.Where(t => IsSubclassOfRawGeneric(validatorType, t))
			.Select(t => t.Name)
			.ToArray()));
	}
	
	private static bool IsSubclassOfRawGeneric(Type baseType, Type derivedType) {
	    while (derivedType != null && derivedType != typeof(object)) {
	        var currentType = derivedType.IsGenericType ? derivedType.GetGenericTypeDefinition() : derivedType;
	        if (baseType == currentType) {
	            return true;
	        }
	        
	        derivedType = derivedType.BaseType;
	    }
	    return false;
	}

}