Submission #1007705

#	Time	Username	Problem	Language	Result	Execution time	Memory
1007705		VMaksimoski008	Hacker (BOI15_hac)	C++17	40 / 100	1099 ms	3100 KiB

hac

#include <bits/stdc++.h>

#define all(x) x.begin(), x.end()
#define rall(x) x.rbegin(), x.rend()
//#define int long long

using namespace std;

using ll = long long;
using pii = pair<int, int>;
using pll = pair<ll, ll>;

const int mod = 1e9 + 7;
const int LOG = 20;
const int maxn = 1e5 + 5;

signed main() {
    int n;
    cin >> n;

    vector<int> v(n+1);
    for(int i=1; i<=n; i++) cin >> v[i];
    for(int i=1; i<=n; i++) v.push_back(v[i]);

    vector<ll> pref(2*n+1);
    for(int i=1; i<=2*n; i++) pref[i] = pref[i-1] + v[i];

    vector<ll> ans(n+1, 1e18);
    int len = (n + 1) / 2;
    for(int i=1; i<=n; i++) {
        ll val = pref[i+len-1] - pref[i-1];
        for(int j=i; j<=i+len-1; j++) {
            if(j <= n) ans[j] = min(ans[j], val);
            else ans[j-n] = min(ans[j-n], val);
        } 
    }

    cout << *max_element(ans.begin() + 1, ans.end()) << '\n';
    return 0;
}

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