参考代码:
def charge(n, summ): a = n // 3 b = n % 3 summ += a if (a + b) < 2: return summ elif (a + b) == 2: summ += 1 return summ else: return charge(a + b, summ) summ = 0 while True: n = int(input()) if n == 0: break else: print(charge(n, summ))
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