def move(n,a,b,c): if(n==1): print(a,'-->',c) else: move(n-1,a,c,b) move(1,a,b,c) move(n-1,b,a,c)
move(3,'A','B','C')
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南城不南_
def move(n,a,b,c): if(n==1): print(a,'-->',c) else: move(n-1,a,c,b) move(1,a,b,c) move(n-1,b,a,c)
move(3,'A','B','C')