Need help computing the VCdim for the following Hypothesis class. If anything can be used from the proofs from the Understanding Machine Learning: From Theory to Algorithms by Shai & Shai it may be used, just please reference it

Let $H=\{h$:$R\{0,1\}|h_{}(x)=1_{[,+1][+2,)}(x),inR\}.$

Compute VCdim $(H).$