注意，下方有疑似AC代码

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#include<bits/stdc++.h>
typedef long long ll;
typedef long double ld;
using namespace std;
const int N=2e4+114;
ll n,ans,he;
ll a[N];
int main(){
	ios::sync_with_stdio(0);cin.tie(0);cout.tie(0);
	cin>>n;
	for(int i=1;i<=n;i++){
		cin>>a[i];
		he+=a[i];
	}
	for(int i=1;i<n;i++){
		ans=max(ans,a[i]+a[i+1]);
	}
	ans=max(ans,a[n]+a[1]);//max
	```cpp
ans=max(ans,he/(n/2)+1);

//平均,取n/2以解决n%2==1情况下a[n],a[1]矛盾问题 cout<<ans; return 0; }

请问以上代码有正确性吗？

ans=max(ans,he/(n/2)+1);

这句语句开始没有“+1”;加上后“3 1 1 1”样例不过

然后我发现WA的点都是有一位差1

就写了个+1，遂过

求dalao讲解