oj.uz

Submission #230730

# Submission time Handle Problem Language Result Execution time Memory
230730 2020-05-11T13:37:06 Z emil_physmath Hacker (BOI15_hac) C++17
100 / 100
 375 ms 28640 KB 
#include <iostream>
#include <limits>
#include <vector>
using namespace std;
 
int t[4000'000];
 
void Build(const vector<int>& a, int v, int vl, int vr)
{
    if (vl == vr)
    {
        t[v] = a[vr];
        return;
    }
    int vm = (vl + vr) / 2;
    Build(a, v * 2, vl, vm);
    Build(a, v * 2 + 1, vm + 1, vr);
    t[v] = min(t[v * 2], t[v * 2 + 1]);
}
int Min(int v, int vl, int vr, int l, int r)
{
    if (vl > r || l > vr)
        return numeric_limits<int>::max();
    if (l <= vl && vr <= r)
        return t[v];
    int vm = (vl + vr) / 2;
    return min(Min(v * 2, vl, vm, l, r), Min(v * 2 + 1, vm + 1, vr, l, r));
}
int main()
{
    int n;
    cin >> n;
    vector<int> a(n);
    for (int i = 0; i < n; ++i)
        cin >> a[i];
    vector<int> b(3 * n), pref(3 * n);
    for (int i = 0; i < 3 * n; ++i)
    {
        b[i] = a[i % n];
        pref[i] = (i ? pref[i - 1] : 0) + b[i];
    }
    vector<int> sum(2 * n);
    for (int i = 0; i < 2 * n; ++i)
        sum[i] = pref[i + (n + 1) / 2 - 1] - (i ? pref[i - 1] : 0);
    Build(sum, 1, 0, 2 * n - 1);
    int ans = 0;
    for (int i = n; i < 2 * n; ++i)
        ans = max(ans, Min(1, 0, 2 * n - 1, i - (n + 1) / 2 + 1, i));
    cout << ans;
}

Subtask #1
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 256 KB Output is correct
2 Correct 5 ms 384 KB Output is correct
3 Correct 5 ms 256 KB Output is correct
4 Correct 5 ms 256 KB Output is correct
5 Correct 5 ms 384 KB Output is correct
6 Correct 5 ms 384 KB Output is correct
7 Correct 5 ms 384 KB Output is correct
8 Correct 5 ms 384 KB Output is correct
9 Correct 5 ms 384 KB Output is correct
10 Correct 5 ms 384 KB Output is correct
11 Correct 5 ms 384 KB Output is correct
12 Correct 5 ms 384 KB Output is correct
13 Correct 5 ms 384 KB Output is correct
14 Correct 5 ms 256 KB Output is correct
15 Correct 5 ms 256 KB Output is correct
16 Correct 5 ms 384 KB Output is correct
17 Correct 5 ms 384 KB Output is correct
18 Correct 5 ms 384 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 256 KB Output is correct
2 Correct 5 ms 384 KB Output is correct
3 Correct 5 ms 256 KB Output is correct
4 Correct 5 ms 256 KB Output is correct
5 Correct 5 ms 384 KB Output is correct
6 Correct 5 ms 384 KB Output is correct
7 Correct 5 ms 384 KB Output is correct
8 Correct 5 ms 384 KB Output is correct
9 Correct 5 ms 384 KB Output is correct
10 Correct 5 ms 384 KB Output is correct
11 Correct 5 ms 384 KB Output is correct
12 Correct 5 ms 384 KB Output is correct
13 Correct 5 ms 384 KB Output is correct
14 Correct 5 ms 256 KB Output is correct
15 Correct 5 ms 256 KB Output is correct
16 Correct 5 ms 384 KB Output is correct
17 Correct 5 ms 384 KB Output is correct
18 Correct 5 ms 384 KB Output is correct
19 Correct 5 ms 384 KB Output is correct
20 Correct 5 ms 384 KB Output is correct
21 Correct 5 ms 384 KB Output is correct
22 Correct 7 ms 512 KB Output is correct
23 Correct 9 ms 640 KB Output is correct
24 Correct 6 ms 512 KB Output is correct
25 Correct 8 ms 692 KB Output is correct
26 Correct 8 ms 640 KB Output is correct
27 Correct 5 ms 256 KB Output is correct
28 Correct 5 ms 256 KB Output is correct
29 Correct 5 ms 256 KB Output is correct
30 Correct 7 ms 640 KB Output is correct
31 Correct 7 ms 640 KB Output is correct

Subtask #3
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 384 KB Output is correct
2 Correct 5 ms 384 KB Output is correct
3 Correct 8 ms 640 KB Output is correct
4 Correct 58 ms 5496 KB Output is correct
5 Correct 132 ms 12280 KB Output is correct
6 Correct 175 ms 14328 KB Output is correct
7 Correct 218 ms 20728 KB Output is correct
8 Correct 358 ms 28280 KB Output is correct

Subtask #4
40.0 / 40.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 256 KB Output is correct
2 Correct 5 ms 384 KB Output is correct
3 Correct 5 ms 256 KB Output is correct
4 Correct 5 ms 256 KB Output is correct
5 Correct 5 ms 384 KB Output is correct
6 Correct 5 ms 384 KB Output is correct
7 Correct 5 ms 384 KB Output is correct
8 Correct 5 ms 384 KB Output is correct
9 Correct 5 ms 384 KB Output is correct
10 Correct 5 ms 384 KB Output is correct
11 Correct 5 ms 384 KB Output is correct
12 Correct 5 ms 384 KB Output is correct
13 Correct 5 ms 384 KB Output is correct
14 Correct 5 ms 256 KB Output is correct
15 Correct 5 ms 256 KB Output is correct
16 Correct 5 ms 384 KB Output is correct
17 Correct 5 ms 384 KB Output is correct
18 Correct 5 ms 384 KB Output is correct
19 Correct 5 ms 384 KB Output is correct
20 Correct 5 ms 384 KB Output is correct
21 Correct 5 ms 384 KB Output is correct
22 Correct 7 ms 512 KB Output is correct
23 Correct 9 ms 640 KB Output is correct
24 Correct 6 ms 512 KB Output is correct
25 Correct 8 ms 692 KB Output is correct
26 Correct 8 ms 640 KB Output is correct
27 Correct 5 ms 256 KB Output is correct
28 Correct 5 ms 256 KB Output is correct
29 Correct 5 ms 256 KB Output is correct
30 Correct 7 ms 640 KB Output is correct
31 Correct 7 ms 640 KB Output is correct
32 Correct 5 ms 384 KB Output is correct
33 Correct 5 ms 384 KB Output is correct
34 Correct 8 ms 640 KB Output is correct
35 Correct 58 ms 5496 KB Output is correct
36 Correct 132 ms 12280 KB Output is correct
37 Correct 175 ms 14328 KB Output is correct
38 Correct 218 ms 20728 KB Output is correct
39 Correct 358 ms 28280 KB Output is correct
40 Correct 11 ms 1024 KB Output is correct
41 Correct 16 ms 1664 KB Output is correct
42 Correct 25 ms 2048 KB Output is correct
43 Correct 143 ms 12280 KB Output is correct
44 Correct 347 ms 28408 KB Output is correct
45 Correct 67 ms 6264 KB Output is correct
46 Correct 214 ms 20344 KB Output is correct
47 Correct 351 ms 28280 KB Output is correct
48 Correct 375 ms 28640 KB Output is correct
49 Correct 307 ms 27896 KB Output is correct
50 Correct 317 ms 27896 KB Output is correct