题目内容
459-99-98.
459-99-98,
=400+59-(100-1)-(100-2),
=400+59-100+1-100+2,
=(400-100-100)+(59+1+2),
=200+62,
=262.
=400+59-(100-1)-(100-2),
=400+59-100+1-100+2,
=(400-100-100)+(59+1+2),
=200+62,
=262.
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