Submission #1029019

#	Time	Username	Problem	Language	Result	Execution time	Memory
1029019		amine_aroua	Hacker (BOI15_hac)	C++17	40 / 100	1067 ms	2652 KiB

hac

#include <bits/stdc++.h>
using namespace std;
#define int long long
signed main() {
    int n ;
    cin>>n;
    vector<int> v(n);
    vector<int> pref(2 * n);
    for(int i = 0 ;i < n ; i++)
    {
        cin>>v[i];
        pref[i] = v[i];
        if(i)
            pref[i]+=pref[i - 1];
    }
    for(int i = n ; i < 2 * n; i++)
    {
        pref[i] = pref[i - 1] + v[i - n];
    }
    int best = 0;
    for(int shift = 0 ; shift  < n ; shift++)
    {
        int ans = LLONG_MAX;
        for(int i = 1 + n/2 ; i <= n ; i++)
        {
            int j = ((i + shift) % n);
            int k = (j + (n+1)/2 - 1);
            ans = min(ans , pref[k] - (j ? pref[j - 1] : 0));
        }
        best = max(best , ans);
    }
    cout<<best<<'\n';
}

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