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Description Before the game starts, \(n\) coins are placed on a ring clockwise, and the \(i\) coin has a face value of \(w_i\). At each step of the ga 阅读全文
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Description The \(n\) people line up in a line from left to right, and everyone faces either to the left or to the right. The relationship between the 阅读全文
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Description In mathematics, \(\sqrt{x}\) represents the arithmetic square root of \(x\). If \(\sqrt{x} = y\), then \(y \ge 0\) and \(y^2 = x\). Given 阅读全文
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Description \(\text{Smart}\) has $1$ magic rings and \(n\) magic beads. Some magic beads have a "mysterious connection". Now you need to place these \ 阅读全文
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Description Give you a string \(S\) with a length of \(n\) and only lowercase letters (subscripts start from $1$ to \(n\)), perform the following two 阅读全文
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Description There are two integer arrays \(A\) and \(B\) of length \(n\). The value of the array \(A\) will only be $1, 0$ or \(-1\). You can perform 阅读全文
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Description \(\text{Smart}\) participated in the \(n\) \(\operatorname{OnlineJudge}\) tour. His ranking position in the first competition is \(\operat 阅读全文
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Description Given a string \(s\) with a length of \(n\) and a string \(c\) with a length of \(m\), the defined level \(\operatorname{level(s,c)}\) rep 阅读全文
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Description Smart likes to use arrays. Today, he needs your help to complete a difficult task. If for each non-empty sub-array of the array \(A\) (a s 阅读全文
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Description Given a tree of \(n\) nodes, the node number is $1 \sim n$ (the root node number is $1$). For each leaf node, output the path from the roo 阅读全文