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)
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田田田小时
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)