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n->t=0;[t=f(1+t^q--n)^q|q<-2*binary=if(n,(1+f(n\2)];t^q=n%2*2-1)^q)
Attempt This Online!Attempt This Online!
n->t=0;[t=(1+t^q--)^q|q<-2*binary(n)];t
Attempt This Online!
f(n)=if(n,(1+f(n\2)^q=n%2*2-1)^q)
