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#297: no_RED_no_DEAD
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Be greedy.
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重庆南开信竞教练-语法组
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爱思接外斜杠接外 如因博欧爱思接外 安普提厚普爱思接外 付鹅体科四一二三四五六爱思接外 爱思接外！
#297: NOI_WF
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Farmer John 的孩子做数学题时遇到了一个难题，想要请你解答一下。
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I AK IOI
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