Submission #32318

#	Time	Username	Problem	Language	Result	Execution time	Memory
32318		dqhungdl	Hacker (BOI15_hac)	C++14	100 / 100	743 ms	17672 KiB

hac

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

int n,sum=0,res=0,a[1000005];
multiset<int> s;

int main()
{
    cin>>n;
    for(int i=1;i<=n;i++)
    {
        cin>>a[i];
        a[i+n]=a[i];
        sum+=a[i];
    }
    for(int i=1;i<=2*n;i++)
        a[i]+=a[i-1];
    int k=n/2;
    for(int i=k;i<n;i++)
        s.insert(a[i]-a[i-k]);
    for(int i=1;i<=n;i++)
    {
        s.erase(s.find(a[i+k-1]-a[i-1]));
        s.insert(a[i+n-1]-a[i+n-1-k]);
        res=max(res,sum-*s.rbegin());
    }
    cout<<res;
}

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