[HackerEarth] Rasta is a big fan of Kheshtaks. A Kheshtak is a rectangle that in each of it cells there is an integer. - 题解

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题目信息
题号 P18663
标题 [HackerEarth] Rasta is a big fan of Kheshtaks. A Kheshtak is a rectangle that in each of it cells there is an integer.
难度 普及
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