Submission #860598

#	Time	Username	Problem	Language	Result	Execution time	Memory
860598		Darren0724	Hacker (BOI15_hac)	C++17	0 / 100	1 ms	348 KiB

hac

#include<bits/stdc++.h>
using namespace std;
#define int long long
#define all(a) a.begin(),a.end()
#define fast ios_base::sync_with_stdio(false);cin.tie(0);
int32_t main(){
    fast;
    int n;cin>>n;
    vector<int> v(3*n+1),pre(3*n+1);
    for(int i=1;i<=n;i++){
        cin>>v[i];
        v[i+2*n]=v[i+n]=v[i];
    }
    for(int i=1;i<=3*n;i++){
        pre[i]=pre[i-1]+v[i];
    }
    int ans=0;
    int p=(n+1)/2;
    for(int i=1;i<=n;i++){
        ans=max(ans,min(pre[i+n]-pre[i+n-p],pre[i+n+p-1]-pre[i+n-1]));
    }
    cout<<ans<<endl;

    return 0;
}

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