Submission #1131998

#	Time	Username	Problem	Language	Result	Execution time	Memory
1131998		I_FloPPed21	Hacker (BOI15_hac)	C++20	0 / 100	0 ms	328 KiB

hac

#include <iostream>
#include <set>
using namespace std;
const int N=5e5+1;
int n,v[2*N];
long long sp[2*N];
void citeste()
{
    cin>>n;
    for(int i=1;i<=n;i++)
    {
        cin>>v[i];
        v[i+n]=v[i];
    }
    for(int i=1;i<=2*n;i++)
        sp[i]=sp[i-1]+v[i];
}
long long ans[N];
void rezolva()
{
    //i+sz-1
    int sz=(n+1)/2;
    multiset<long long>mst;
    for(int i=1;i<=n;i++)
    {
        if(i>sz)
        {
            long long val=sp[i-1]-sp[i-sz];
            mst.erase(mst.find(sp[i-1]-sp[i-sz-1]));
        }
        mst.insert(sp[i+sz-1]-sp[i-1]);
        ans[i]=*mst.begin();
    }
    long long rasp=0;
    for(int i=1;i<=n;i++)
        rasp=max(rasp,ans[i]);
    cout<<rasp;
}
int main()
{
    ios::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);
    citeste();
    rezolva();
    return 0;
}

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