oj.uz

Submission #1025432

# Submission time Handle Problem Language Result Execution time Memory
1025432 2024-07-17T03:15:48 Z joelgun14 Hacker (BOI15_hac) C++17
100 / 100
 259 ms 26256 KB 
// header file
#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
// pragma
#pragma GCC optimize("Ofast")
#pragma GCC optimize("unroll-loops")
// macros
#define endl "\n"
#define ll long long
#define mp make_pair
#define ins insert
#define lb lower_bound
#define pb push_back
#define ub upper_bound
#define lll __int128
#define fi first
#define se second
using namespace std;
using namespace __gnu_pbds;
typedef tree<int, null_type, less_equal<int>, rb_tree_tag, tree_order_statistics_node_update> ordered_multiset;
typedef tree<int, null_type, less<int>, rb_tree_tag,tree_order_statistics_node_update> ordered_set;
int main() {
  ios_base::sync_with_stdio(0); cin.tie(NULL);
  int n;
  cin >> n;
  ll a[n + 1], pref[2 * n + 1];
  for(int i = 1; i <= n; ++i)
    cin >> a[i];
  pref[0] = 0;
  for(int i = 1; i <= 2 * n; ++i)
    pref[i] = pref[i - 1] + (i > n ? a[i - n] : a[i]);
  multiset<ll> s;
  for(int i = 1; i + n / 2 < n + 1; ++i) {
    // cerr << "INS " << i << " " << pref[i + n / 2] - pref[i] << endl;
    s.insert(pref[i + n / 2] - pref[i]);
  }
  ll res = 0;
  for(int i = 1; i <= n; ++i) {
    // cerr << "DEB " << i << " " << *--s.end() << endl;
    res = max(res, pref[n] - *--s.end());
    s.erase(s.find(pref[i + n / 2] - pref[i]));
    s.insert(pref[n + i] - pref[i + n - n / 2]);
  }
  cout << res << endl;
  return 0;
}

Subtask #1
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 1 ms 344 KB Output is correct
10 Correct 1 ms 344 KB Output is correct
11 Correct 1 ms 456 KB Output is correct
12 Correct 0 ms 400 KB Output is correct
13 Correct 1 ms 348 KB Output is correct
14 Correct 0 ms 456 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 1 ms 348 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 0 ms 348 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 1 ms 344 KB Output is correct
10 Correct 1 ms 344 KB Output is correct
11 Correct 1 ms 456 KB Output is correct
12 Correct 0 ms 400 KB Output is correct
13 Correct 1 ms 348 KB Output is correct
14 Correct 0 ms 456 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 1 ms 348 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 1 ms 348 KB Output is correct
21 Correct 0 ms 348 KB Output is correct
22 Correct 1 ms 604 KB Output is correct
23 Correct 2 ms 604 KB Output is correct
24 Correct 1 ms 604 KB Output is correct
25 Correct 2 ms 604 KB Output is correct
26 Correct 2 ms 604 KB Output is correct
27 Correct 0 ms 348 KB Output is correct
28 Correct 0 ms 348 KB Output is correct
29 Correct 0 ms 348 KB Output is correct
30 Correct 1 ms 604 KB Output is correct
31 Correct 1 ms 604 KB Output is correct

Subtask #3
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 2 ms 604 KB Output is correct
4 Correct 28 ms 4444 KB Output is correct
5 Correct 85 ms 10384 KB Output is correct
6 Correct 117 ms 13136 KB Output is correct
7 Correct 118 ms 15696 KB Output is correct
8 Correct 259 ms 25996 KB Output is correct

Subtask #4
40.0 / 40.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 1 ms 344 KB Output is correct
10 Correct 1 ms 344 KB Output is correct
11 Correct 1 ms 456 KB Output is correct
12 Correct 0 ms 400 KB Output is correct
13 Correct 1 ms 348 KB Output is correct
14 Correct 0 ms 456 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 1 ms 348 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 1 ms 348 KB Output is correct
21 Correct 0 ms 348 KB Output is correct
22 Correct 1 ms 604 KB Output is correct
23 Correct 2 ms 604 KB Output is correct
24 Correct 1 ms 604 KB Output is correct
25 Correct 2 ms 604 KB Output is correct
26 Correct 2 ms 604 KB Output is correct
27 Correct 0 ms 348 KB Output is correct
28 Correct 0 ms 348 KB Output is correct
29 Correct 0 ms 348 KB Output is correct
30 Correct 1 ms 604 KB Output is correct
31 Correct 1 ms 604 KB Output is correct
32 Correct 0 ms 348 KB Output is correct
33 Correct 0 ms 348 KB Output is correct
34 Correct 2 ms 604 KB Output is correct
35 Correct 28 ms 4444 KB Output is correct
36 Correct 85 ms 10384 KB Output is correct
37 Correct 117 ms 13136 KB Output is correct
38 Correct 118 ms 15696 KB Output is correct
39 Correct 259 ms 25996 KB Output is correct
40 Correct 3 ms 856 KB Output is correct
41 Correct 7 ms 1372 KB Output is correct
42 Correct 9 ms 1884 KB Output is correct
43 Correct 89 ms 10836 KB Output is correct
44 Correct 217 ms 25876 KB Output is correct
45 Correct 33 ms 5464 KB Output is correct
46 Correct 119 ms 15700 KB Output is correct
47 Correct 247 ms 26236 KB Output is correct
48 Correct 161 ms 26256 KB Output is correct
49 Correct 149 ms 25424 KB Output is correct
50 Correct 154 ms 25428 KB Output is correct