M=(0,1,0),(0,-1,0),(0,0,1),(0,0,-1),(1,0,0),(-1,0,0)
E=enumerate
N=len
def f(b):
 C=0
 for z,B in E(b):
  for x,r in E(B):
   for y,v in E(r):
    if v:
     q,s=[(*(V:=(z+Z,x+X,y+Y)),[V],i)for i,(Z,X,Y)in E(M)],[]
     for J,K,L,p,d in q:
      if~-(d in s):
       if N(b)>J>-1<K<N(b[0])and-1<L<N(b[0][0]):
        for Z,X,Y in M:q+=(b[J][K][L]<1)*(((V:=(J+Z,K+X,L+Y))in p)<(N(p)<=N(b)))*[(*V,p+[V],d)]
       else:s+=d,
     C+=N(s)
 return C
 
print(f([[[1,1,1],[1,1,1],[1,1,1]],[[1,1,1],[1,0,1],[1,1,1]],[[1,1,1],[1,1,1],[1,1,1]]]))
print(f([[[1,0],[0,0]],[[1,1],[0,1]]]))
print(f([[[1]],[[0]],[[1]]]))
print(f([[[1,1,1,1,1,1],[1,1,1,1,1,1],[1,1,1,1,1,1],[1,1,1,1,1,1]],[[1,1,1,1,1,1],[1,0,0,0,0,1],[1,0,0,0,0,1],[1,1,1,1,1,1]],[[1,1,1,1,1,1],[1,0,0,0,0,1],[1,0,0,0,0,1],[1,1,1,1,1,1]],[[1,1,1,1,1,1],[1,0,1,1,0,1],[1,0,1,1,0,1],[1,1,1,1,1,1]],[[1,1,1,1,1,1],[1,0,1,1,0,1],[1,0,0,1,0,1],[1,1,1,1,1,1]],[[1,1,1,1,1,1],[1,1,1,1,1,1],[1,1,1,1,1,1],[1,1,1,1,1,1]]]))
print(f([[[0,0,0],[0,1,0],[0,0,0]],[[0,1,0],[1,0,1],[0,1,0]],[[0,0,0],[0,1,0],[0,0,0]]]))
print(f([[[1,1,1,1,1],[1,1,1,1,1],[1,1,1,1,1],[1,1,1,1,1],[1,1,1,1,1]],[[1,1,1,1,1],[1,0,0,0,1],[1,0,0,0,1],[1,0,0,0,1],[1,1,1,1,1]],[[1,1,1,1,1],[1,0,0,0,1],[1,0,1,0,1],[1,0,0,0,1],[1,1,1,1,1]],[[1,1,1,1,1],[1,0,0,0,1],[1,0,0,0,1],[1,0,0,0,1],[1,1,1,1,1]],[[1,1,1,1,1],[1,1,1,1,1],[1,1,1,1,1],[1,1,1,1,1],[1,1,1,1,1]]] ))
print(f([[[1,1,0,1,1],[1,1,0,1,1],[1,1,0,1,1]],[[1,1,0,1,1],[1,1,0,1,1],[1,1,0,1,1]],[[1,1,0,1,1],[1,1,0,1,1],[1,1,0,1,1]],[[1,1,0,1,1],[1,1,0,1,1],[1,1,0,1,1]]]))
print(f([[[0,1,1],[1,1,1],[1,1,1]],[[1,1,1],[1,0,1],[1,1,1]],[[1,1,1],[1,1,1],[1,1,1]]]))

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