易错点
易错点
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线段树 记得 \(\texttt{build}\)
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数据的\(\texttt{n或者m}\)记得输完!!!
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\(\texttt{vector}\) 别忘了\(\texttt{resize}\)
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哈希表 的模数不要大于数组大小,不然模出来的\(\texttt{val}\)大于了\(\texttt{hash.size}\),强行硬存会\(\texttt{SF}\)
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咕咕咕。。。
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