oj.uz

Submission #941135

# Submission time Handle Problem Language Result Execution time Memory
941135 2024-03-08T07:50:24 Z a_l_i_r_e_z_a Hacker (BOI15_hac) C++17
100 / 100
 229 ms 18536 KB 
// In the name of God
// Hope is last to die
 
#include <bits/stdc++.h>
using namespace std;
 
// #pragma GCC optimize("O3,unroll-loops")
// #pragma GCC target("avx2")
 
typedef long long ll;
typedef long double ld;
typedef pair<int, int> pii;
typedef pair<ll, ll> pll;
 
#define pb push_back
// #define int long long
#define S second
#define F first
#define mp make_pair
#define smax(x, y) (x) = max((x), (y))
#define smin(x, y) (x) = min((x), (y))
#define all(x) (x).begin(), (x).end()
 
const int maxn = 5e5 + 5;
const int inf = 1e9 + 7;
int n, a[maxn], ps[maxn];
multiset<int> st;

int get(int i){
    int res = ps[min(n, i + (n + 1) / 2 - 1)] - ps[i - 1];
    if(i + (n + 1) / 2 - 1 > n){
        res += ps[i + (n + 1) / 2 - 1 - n];
    }
    return res;
}

int32_t main()
{
    ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);

    cin >> n;
    for(int i = 1; i <= n; i++){
        cin >> a[i];
        ps[i] = ps[i - 1] + a[i];
    }
    st.insert(get(1));
    for(int i = n / 2 + 2; i <= n; i++){
        st.insert(get(i));
    }
    int ans = 0;
    for(int i = 1; i <= n; i++){
        smax(ans, (*st.begin()));
        int j = i - (n - 1) / 2;
        if(j <= 0) j += n;
        st.erase(st.find(get(j)));
        if(i < n) st.insert(get(i + 1));
    }
    cout << ans << '\n';

    return 0;
}

Subtask #1
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2396 KB Output is correct
2 Correct 1 ms 2396 KB Output is correct
3 Correct 1 ms 2396 KB Output is correct
4 Correct 1 ms 2648 KB Output is correct
5 Correct 1 ms 2396 KB Output is correct
6 Correct 1 ms 2512 KB Output is correct
7 Correct 1 ms 2396 KB Output is correct
8 Correct 1 ms 2396 KB Output is correct
9 Correct 1 ms 2396 KB Output is correct
10 Correct 1 ms 2396 KB Output is correct
11 Correct 1 ms 2396 KB Output is correct
12 Correct 1 ms 2396 KB Output is correct
13 Correct 1 ms 2396 KB Output is correct
14 Correct 1 ms 2396 KB Output is correct
15 Correct 1 ms 2396 KB Output is correct
16 Correct 1 ms 2396 KB Output is correct
17 Correct 1 ms 2392 KB Output is correct
18 Correct 1 ms 2804 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2396 KB Output is correct
2 Correct 1 ms 2396 KB Output is correct
3 Correct 1 ms 2396 KB Output is correct
4 Correct 1 ms 2648 KB Output is correct
5 Correct 1 ms 2396 KB Output is correct
6 Correct 1 ms 2512 KB Output is correct
7 Correct 1 ms 2396 KB Output is correct
8 Correct 1 ms 2396 KB Output is correct
9 Correct 1 ms 2396 KB Output is correct
10 Correct 1 ms 2396 KB Output is correct
11 Correct 1 ms 2396 KB Output is correct
12 Correct 1 ms 2396 KB Output is correct
13 Correct 1 ms 2396 KB Output is correct
14 Correct 1 ms 2396 KB Output is correct
15 Correct 1 ms 2396 KB Output is correct
16 Correct 1 ms 2396 KB Output is correct
17 Correct 1 ms 2392 KB Output is correct
18 Correct 1 ms 2804 KB Output is correct
19 Correct 1 ms 2396 KB Output is correct
20 Correct 1 ms 2396 KB Output is correct
21 Correct 1 ms 2392 KB Output is correct
22 Correct 1 ms 2396 KB Output is correct
23 Correct 2 ms 2652 KB Output is correct
24 Correct 1 ms 2396 KB Output is correct
25 Correct 2 ms 2652 KB Output is correct
26 Correct 2 ms 2652 KB Output is correct
27 Correct 1 ms 2396 KB Output is correct
28 Correct 1 ms 2396 KB Output is correct
29 Correct 1 ms 2396 KB Output is correct
30 Correct 2 ms 2652 KB Output is correct
31 Correct 2 ms 2664 KB Output is correct

Subtask #3
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2396 KB Output is correct
2 Correct 1 ms 2516 KB Output is correct
3 Correct 3 ms 2908 KB Output is correct
4 Correct 26 ms 4956 KB Output is correct
5 Correct 75 ms 8540 KB Output is correct
6 Correct 95 ms 10336 KB Output is correct
7 Correct 113 ms 11860 KB Output is correct
8 Correct 228 ms 18268 KB Output is correct

Subtask #4
40.0 / 40.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2396 KB Output is correct
2 Correct 1 ms 2396 KB Output is correct
3 Correct 1 ms 2396 KB Output is correct
4 Correct 1 ms 2648 KB Output is correct
5 Correct 1 ms 2396 KB Output is correct
6 Correct 1 ms 2512 KB Output is correct
7 Correct 1 ms 2396 KB Output is correct
8 Correct 1 ms 2396 KB Output is correct
9 Correct 1 ms 2396 KB Output is correct
10 Correct 1 ms 2396 KB Output is correct
11 Correct 1 ms 2396 KB Output is correct
12 Correct 1 ms 2396 KB Output is correct
13 Correct 1 ms 2396 KB Output is correct
14 Correct 1 ms 2396 KB Output is correct
15 Correct 1 ms 2396 KB Output is correct
16 Correct 1 ms 2396 KB Output is correct
17 Correct 1 ms 2392 KB Output is correct
18 Correct 1 ms 2804 KB Output is correct
19 Correct 1 ms 2396 KB Output is correct
20 Correct 1 ms 2396 KB Output is correct
21 Correct 1 ms 2392 KB Output is correct
22 Correct 1 ms 2396 KB Output is correct
23 Correct 2 ms 2652 KB Output is correct
24 Correct 1 ms 2396 KB Output is correct
25 Correct 2 ms 2652 KB Output is correct
26 Correct 2 ms 2652 KB Output is correct
27 Correct 1 ms 2396 KB Output is correct
28 Correct 1 ms 2396 KB Output is correct
29 Correct 1 ms 2396 KB Output is correct
30 Correct 2 ms 2652 KB Output is correct
31 Correct 2 ms 2664 KB Output is correct
32 Correct 1 ms 2396 KB Output is correct
33 Correct 1 ms 2516 KB Output is correct
34 Correct 3 ms 2908 KB Output is correct
35 Correct 26 ms 4956 KB Output is correct
36 Correct 75 ms 8540 KB Output is correct
37 Correct 95 ms 10336 KB Output is correct
38 Correct 113 ms 11860 KB Output is correct
39 Correct 228 ms 18268 KB Output is correct
40 Correct 5 ms 2648 KB Output is correct
41 Correct 8 ms 2908 KB Output is correct
42 Correct 10 ms 3268 KB Output is correct
43 Correct 76 ms 8532 KB Output is correct
44 Correct 200 ms 18264 KB Output is correct
45 Correct 32 ms 5464 KB Output is correct
46 Correct 134 ms 11856 KB Output is correct
47 Correct 229 ms 18264 KB Output is correct
48 Correct 175 ms 18536 KB Output is correct
49 Correct 152 ms 17500 KB Output is correct
50 Correct 144 ms 17648 KB Output is correct