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## 题目描述 You are given $ n $ intervals and $ m $ points on the number line. The $ i $ -th intervals covers coordinates $ [l_i,r_i] $ and the $ i $ -th 阅读全文
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Let $ c $ be some positive integer. Let's call an array $ a_1, a_2, \ldots, a_n $ of positive integers $ c $ -array, if for all $ i $ condition $ 1 \l 阅读全文
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Problem StatementThere are $N$ cards numbered $1$ through $N$. Each face of a card has an integer written on it; card $i$ has $A_i$ on its front and $ 阅读全文
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## 题目描述 LuoTianyi gives you an array $ a $ of $ n $ integers and the index begins from $ 1 $ . Define $ g(i,j) $ as follows: - $ g(i,j) $ is the large 阅读全文