摘要:题意:n // include define fi first define se second define db double define mp make_pair define pb push_back define mt make_tuple define pi acos( 1.0) de
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摘要:总的来说这套题还是很不错的,让我对主席树有了更深的了解 A:水题,模拟即可 #include<bits/stdc++.h> #define fi first #define se second #define mp make_pair #define pb push_back #define pi
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