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Alice has a magic array. She suggests that the value of a interval is equal to the sum of the values in the interval, multiplied by the smallest value 阅读全文
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题目描述 T-net which is a new telecommunications company, plans to install its base stations in the city. The places where base stations must be installed 阅读全文
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题目描述 Snuke has two boards, each divided into a grid with N rows and N columns. For both of these boards, the square at the i-th row from the top and t 阅读全文
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题目描述 Takahashi Lake has a perimeter of L. On the circumference of the lake, there is a residence of the lake's owner, Takahashi. Each point on the cir 阅读全文
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题目描述 There are N cats. We number them from 1 through N.Each of the cats wears a hat. Cat i says: "there are exactly ai different colors among the N−1 阅读全文
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题目描述 There is a circle with a circumference of L. Each point on the circumference has a coordinate value, which represents the arc length from a certa 阅读全文