.netFramework features

[MfanaShezi]

does code wars have the .netframe work features? and how can i add using directive since i'm not given the main method?

[DeoEsor]

does code wars have the .netframe work features?

I'm there (at codewars) about a month and I use some .NET Core features, so I suppose that .NET Framework features available too.

and how can i add using directive since i'm not given the main method?

I'm just adding using directive in beginning of file like that

UPD: I strongly recommended you adding with using directive all namespaces that you are using