09e88202bc8a6dfe23eff3964f9c7069966f0e0bf154633f9256b40f50bca59b9176bba46dd2a211f4fb86397933c404172ab5e49b

7ce98307c6f6688323e881e1419c706c4fd4479fdbce42628c31b21a8c1c9d62043125d5e2488f8546397cb53323e353f173010224

답은 21이라는데 저러면 a1 = 10이여도 되는거 아닌가요

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