Submission #426149

#	Time	Username	Problem	Language	Result	Execution time	Memory
426149		penguinhacker	Hacker (BOI15_hac)	C++14	0 / 100	1 ms	332 KiB

hac

#include <bits/stdc++.h>
using namespace std;

#define ll long long
#define ar array

const int mxN=5e5;
int n, a[mxN], cur, s[mxN];

int main() {
	ios::sync_with_stdio(0);
	cin.tie(0);
	cin >> n;
	for (int i=0; i<n; ++i)
		cin >> a[i];
	int m=(n+1)/2;
	for (int i=0; i<m; ++i)
		cur+=a[i];
	s[0]=cur;
	for (int i=1; i<m; ++i) {
		cur+=a[(i+m-1)%n]-a[i-1];
		s[i]=cur;
	}
	int ans=0;
	for (int i=0; i<n; ++i)
		ans=max(ans, min(s[i], s[(i+m-1)%n]));
	cout << ans;
	return 0;
}

• Subtask 1: 0 / 20
• Subtask 2: 0 / 20
• Subtask 3: 0 / 20
• Subtask 4: 0 / 40