A. Flipping Game1200 / 前缀和

Posted 2021-11-11 幽殇默

https://codeforces.com/problemset/problem/327/A

#include<bits/stdc++.h>
using namespace std;
int a[105],s[105],ss[105],n;
int main(void) 
{
	cin>>n;
	for(int i=1;i<=n;i++) cin>>a[i];
	for(int i=1;i<=n;i++) s[i]=s[i-1]+a[i];
	int ans=0;
	for(int i=1;i<=n;i++)
	{
		for(int j=i;j<=n;j++)
		{
			int temp=j-i+1-(s[j]-s[i-1]);
			temp+=s[i-1]+s[n]-s[j];
			ans=max(ans,temp);
		}
	}
	cout<<ans<<endl;
}