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Submission #705358

# Submission time Handle Problem Language Result Execution time Memory
705358 2023-03-04T06:24:08 Z LittleCube Hacker (BOI15_hac) C++14
100 / 100
 55 ms 14852 KB 
#include <bits/stdc++.h>
#define ll long long
#define pii pair<int, int>
#define pll pair<ll, ll>
#define F first
#define S second
using namespace std;

ll n, h, v[500005], s[500005], sum, ans;

signed main()
{
    ios::sync_with_stdio(0);
    cin.tie(0), cout.tie(0);
    cin >> n;
    h = n / 2;
    for (int i = 0; i < n; i++)
        cin >> v[i];
    for (int i = 0; i < n; i++)
        sum += v[i];
    for (int i = 0; i < h; i++)
        s[0] += v[i];
    for (int i = 1; i < n; i++)
        s[i] = s[i - 1] - v[i - 1] + v[(i + h - 1) % n];
    deque<pll> dq;
    for (int i = 1; i < n - h + 1; i++)
    {
        while (!dq.empty() && dq.back().F < s[i])
            dq.pop_back();
        dq.push_back(pll(s[i], i));
    }
    for (int i = 0; i < n; i++)
    {
        ans = max(ans, sum - dq.front().F);
        if (dq.front().S == i + 1)
            dq.pop_front();
        int j = (i - h + 1 + n) % n;
        while (!dq.empty() && dq.back().F < s[j])
            dq.pop_back();
        dq.push_back(pll(s[j], j));
    }
    cout << ans << '\n';
}

Subtask #1
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 1 ms 328 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 0 ms 332 KB Output is correct
10 Correct 1 ms 328 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 1 ms 328 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 1 ms 212 KB Output is correct
15 Correct 1 ms 328 KB Output is correct
16 Correct 0 ms 340 KB Output is correct
17 Correct 1 ms 324 KB Output is correct
18 Correct 1 ms 340 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 1 ms 328 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 0 ms 332 KB Output is correct
10 Correct 1 ms 328 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 1 ms 328 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 1 ms 212 KB Output is correct
15 Correct 1 ms 328 KB Output is correct
16 Correct 0 ms 340 KB Output is correct
17 Correct 1 ms 324 KB Output is correct
18 Correct 1 ms 340 KB Output is correct
19 Correct 1 ms 328 KB Output is correct
20 Correct 1 ms 340 KB Output is correct
21 Correct 1 ms 340 KB Output is correct
22 Correct 1 ms 340 KB Output is correct
23 Correct 1 ms 340 KB Output is correct
24 Correct 1 ms 340 KB Output is correct
25 Correct 1 ms 340 KB Output is correct
26 Correct 1 ms 340 KB Output is correct
27 Correct 1 ms 212 KB Output is correct
28 Correct 1 ms 340 KB Output is correct
29 Correct 1 ms 212 KB Output is correct
30 Correct 1 ms 468 KB Output is correct
31 Correct 1 ms 468 KB Output is correct

Subtask #3
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 11 ms 1492 KB Output is correct
5 Correct 22 ms 3472 KB Output is correct
6 Correct 26 ms 4212 KB Output is correct
7 Correct 32 ms 4948 KB Output is correct
8 Correct 51 ms 8136 KB Output is correct

Subtask #4
40.0 / 40.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 1 ms 328 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 0 ms 332 KB Output is correct
10 Correct 1 ms 328 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 1 ms 328 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 1 ms 212 KB Output is correct
15 Correct 1 ms 328 KB Output is correct
16 Correct 0 ms 340 KB Output is correct
17 Correct 1 ms 324 KB Output is correct
18 Correct 1 ms 340 KB Output is correct
19 Correct 1 ms 328 KB Output is correct
20 Correct 1 ms 340 KB Output is correct
21 Correct 1 ms 340 KB Output is correct
22 Correct 1 ms 340 KB Output is correct
23 Correct 1 ms 340 KB Output is correct
24 Correct 1 ms 340 KB Output is correct
25 Correct 1 ms 340 KB Output is correct
26 Correct 1 ms 340 KB Output is correct
27 Correct 1 ms 212 KB Output is correct
28 Correct 1 ms 340 KB Output is correct
29 Correct 1 ms 212 KB Output is correct
30 Correct 1 ms 468 KB Output is correct
31 Correct 1 ms 468 KB Output is correct
32 Correct 0 ms 212 KB Output is correct
33 Correct 0 ms 340 KB Output is correct
34 Correct 1 ms 340 KB Output is correct
35 Correct 11 ms 1492 KB Output is correct
36 Correct 22 ms 3472 KB Output is correct
37 Correct 26 ms 4212 KB Output is correct
38 Correct 32 ms 4948 KB Output is correct
39 Correct 51 ms 8136 KB Output is correct
40 Correct 2 ms 468 KB Output is correct
41 Correct 3 ms 684 KB Output is correct
42 Correct 4 ms 852 KB Output is correct
43 Correct 21 ms 4308 KB Output is correct
44 Correct 54 ms 10308 KB Output is correct
45 Correct 11 ms 2256 KB Output is correct
46 Correct 33 ms 6340 KB Output is correct
47 Correct 52 ms 10300 KB Output is correct
48 Correct 55 ms 14852 KB Output is correct
49 Correct 44 ms 13816 KB Output is correct
50 Correct 53 ms 13792 KB Output is correct