Submission #926010

#	Time	Username	Problem	Language	Result	Execution time	Memory
926010		Ludissey	Hacker (BOI15_hac)	C++14	0 / 100	1 ms	388 KiB

hac

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

signed main() {
    ios_base::sync_with_stdio(false); cin.tie(nullptr);
	int n; cin >> n;
    vector<int> v(n*2);
    for (int i = 0; i < n; i++) cin >> v[i];
    for (int i = 0; i < n; i++) v[i+n]=v[i];
    
    int suml=0,sumr=0;
    int mx=0;
    int l1=0, l2=(n+2)/2;
    int r1=(n-1)/2, r2=n;
    for (int i = 0; i <= n; i++)
    {
        if(i<=r1) suml+=v[i];
        if(i>=l2) sumr+=v[i];
    }
    mx=max(mx,min(suml,sumr));
    for (int i = 1; i < n; i++)
    {
        suml-=v[l1];
        sumr-=v[l2];
        l1++;
        l2++;
        r1++;
        r2++;
        suml+=v[r1];
        sumr+=v[r2];
        mx=max(mx,min(suml,sumr));
    }
    cout << mx;
    return 0;
}

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