Submission #1028967

#	Time	Username	Problem	Language	Result	Execution time	Memory
1028967		amine_aroua	Hacker (BOI15_hac)	C++17	20 / 100	66 ms	10324 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(n);
    for(int i = 0 ;i < n ; i++)
    {
        cin>>v[i];
        pref[i] = v[i];
        if(i)
            pref[i]+=pref[i - 1];
    }
    int ans = LLONG_MAX;
    for(int i = 1 + n/2 ; i <= n ; i++)
    {
        int j = (i % n);
        int k = (j + (n+1)/2 - 1 + n)%n;
        if(k >= j)
            ans = min(ans , pref[k] - (j ? pref[j - 1] : 0));
        else
            ans = min(ans , pref[n - 1] - (j ? pref[j - 1] : 0) + pref[k]);
    }
    cout<<ans<<'\n';
}

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