网站介绍：文章浏览阅读244次。#include<bits/stdc++.h>using namespace std;#define maxn 20005long long pre,post,ans=0;int a[maxn],n;int main(){ cin>>n; for(int i=0; i<n; i++) cin>>a[i]; ..._b - three parts of the array
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- 链接标题：C - Three Parts of the Array -（数组左-右搜索）_b - three parts of the array-CSDN博客
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