oj.uz

Submission #835409

# Submission time Handle Problem Language Result Execution time Memory
835409 2023-08-23T14:13:41 Z SamAnd Radio Towers (IOI22_towers) C++17
23 / 100
 4000 ms 8520 KB 
#include "towers.h"
#include <bits/stdc++.h>
using namespace std;
#define fi first
#define se second
#define m_p make_pair
#define all(x) (x).begin(),(x).end()
#define sz(x) ((int)(x).size())
typedef long long ll;
const int N = 100005;

int n, d;
int a[N];

int ul[N], ur[N];
vector<pair<pair<int, int>, pair<int, int> > > b;

void pre()
{
    b.clear();

    vector<int> s;
    for (int i = 1; i <= n; ++i)
    {
        while (!s.empty() && a[s.back()] <= a[i])
            s.pop_back();
        s.push_back(i);

        int l = 0, r = sz(s) - 1;
        ul[i] = 0;
        while (l <= r)
        {
            int m = (l + r) / 2;
            if (a[s[m]] - d >= a[i])
            {
                ul[i] = s[m];
                l = m + 1;
            }
            else
            {
                r = m - 1;
            }
        }
    }
    s.clear();
    for (int i = n; i >= 1; --i)
    {
        while (!s.empty() && a[s.back()] <= a[i])
            s.pop_back();
        s.push_back(i);

        int l = 0, r = sz(s) - 1;
        ur[i] = n + 1;
        while (l <= r)
        {
            int m = (l + r) / 2;
            if (a[s[m]] - d >= a[i])
            {
                ur[i] = s[m];
                l = m + 1;
            }
            else
                r = m - 1;
        }
    }

    for (int i = 1; i <= n; ++i)
    {
        ul[i]++;
        ur[i]--;
    }

    for (int i = 1; i <= n; ++i)
    {
        b.push_back(m_p(m_p(ur[i] - ul[i] + 1, i), m_p(ul[i], ur[i])));
    }
    sort(all(b));
    set<int> t;
    t.insert(0);
    t.insert(n + 1);
    for (int ii = 0; ii < n; ++ii)
    {
        int i = b[ii].fi.se;
        t.insert(i);
        auto it = t.find(i);
        --it;
        if (ur[*it] < ul[i])
            b[ii].fi.fi = 1;
        else
            b[ii].fi.fi = *it + 1;
        b[ii].fi.se = i;
        ++it;
        ++it;
        b[ii].se.fi = i;
        if (ur[i] < ul[*it])
            b[ii].se.se = n;
        else
            b[ii].se.se = *it - 1;
    }
}

void init(int N, std::vector<int> H)
{
    n = N;
    for (int i = 1; i <= n; ++i)
        a[i] = H[i - 1];
}

int max_towers(int L, int R, int D)
{
    ++L;
    ++R;
    //if (b.empty())
    {
        d = D;
        pre();
    }

    int ans = 0;
    for (int i = 0; i < n; ++i)
    {
        if (b[i].fi.fi <= L && L <= b[i].fi.se && b[i].se.fi <= R && R <= b[i].se.se)
            ++ans;
    }
    return ans;
}

/*
7 1
10 20 60 40 50 30 70
0 1 17

7 3
10 20 60 40 50 30 70
1 5 10
2 2 100
0 6 17
*/

Subtask #1
0 / 4.0

# Verdict Execution time Memory Grader output
1 Execution timed out 4101 ms 5484 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #2
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 336 KB Output is correct
2 Correct 1 ms 464 KB Output is correct
3 Correct 1 ms 336 KB Output is correct
4 Correct 1 ms 464 KB Output is correct
5 Correct 1 ms 464 KB Output is correct
6 Correct 1 ms 464 KB Output is correct
7 Correct 1 ms 464 KB Output is correct
8 Correct 1 ms 464 KB Output is correct
9 Correct 1 ms 464 KB Output is correct
10 Correct 1 ms 464 KB Output is correct
11 Correct 1 ms 464 KB Output is correct
12 Correct 0 ms 208 KB Output is correct
13 Correct 1 ms 464 KB Output is correct
14 Correct 1 ms 464 KB Output is correct
15 Correct 1 ms 336 KB Output is correct
16 Correct 1 ms 464 KB Output is correct
17 Correct 1 ms 588 KB Output is correct
18 Correct 1 ms 464 KB Output is correct
19 Correct 1 ms 464 KB Output is correct
20 Correct 1 ms 336 KB Output is correct
21 Correct 1 ms 336 KB Output is correct
22 Correct 1 ms 464 KB Output is correct
23 Correct 1 ms 464 KB Output is correct
24 Correct 1 ms 464 KB Output is correct
25 Correct 1 ms 336 KB Output is correct
26 Correct 1 ms 464 KB Output is correct
27 Correct 1 ms 464 KB Output is correct
28 Correct 1 ms 464 KB Output is correct
29 Correct 1 ms 464 KB Output is correct
30 Correct 1 ms 464 KB Output is correct
31 Correct 2 ms 464 KB Output is correct
32 Correct 2 ms 464 KB Output is correct
33 Correct 1 ms 464 KB Output is correct
34 Correct 1 ms 464 KB Output is correct
35 Correct 1 ms 464 KB Output is correct

Subtask #3
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 336 KB Output is correct
2 Correct 1 ms 464 KB Output is correct
3 Correct 1 ms 336 KB Output is correct
4 Correct 1 ms 464 KB Output is correct
5 Correct 1 ms 464 KB Output is correct
6 Correct 1 ms 464 KB Output is correct
7 Correct 1 ms 464 KB Output is correct
8 Correct 1 ms 464 KB Output is correct
9 Correct 1 ms 464 KB Output is correct
10 Correct 1 ms 464 KB Output is correct
11 Correct 1 ms 464 KB Output is correct
12 Correct 0 ms 208 KB Output is correct
13 Correct 1 ms 464 KB Output is correct
14 Correct 1 ms 464 KB Output is correct
15 Correct 1 ms 336 KB Output is correct
16 Correct 1 ms 464 KB Output is correct
17 Correct 1 ms 588 KB Output is correct
18 Correct 1 ms 464 KB Output is correct
19 Correct 1 ms 464 KB Output is correct
20 Correct 1 ms 336 KB Output is correct
21 Correct 1 ms 336 KB Output is correct
22 Correct 1 ms 464 KB Output is correct
23 Correct 1 ms 464 KB Output is correct
24 Correct 1 ms 464 KB Output is correct
25 Correct 1 ms 336 KB Output is correct
26 Correct 1 ms 464 KB Output is correct
27 Correct 1 ms 464 KB Output is correct
28 Correct 1 ms 464 KB Output is correct
29 Correct 1 ms 464 KB Output is correct
30 Correct 1 ms 464 KB Output is correct
31 Correct 2 ms 464 KB Output is correct
32 Correct 2 ms 464 KB Output is correct
33 Correct 1 ms 464 KB Output is correct
34 Correct 1 ms 464 KB Output is correct
35 Correct 1 ms 464 KB Output is correct
36 Correct 41 ms 5400 KB Output is correct
37 Correct 43 ms 8036 KB Output is correct
38 Correct 49 ms 8120 KB Output is correct
39 Correct 38 ms 8120 KB Output is correct
40 Correct 45 ms 8120 KB Output is correct
41 Correct 45 ms 7996 KB Output is correct
42 Correct 43 ms 8120 KB Output is correct
43 Correct 44 ms 8484 KB Output is correct
44 Correct 37 ms 8460 KB Output is correct
45 Correct 41 ms 8368 KB Output is correct
46 Correct 40 ms 8336 KB Output is correct
47 Correct 47 ms 8088 KB Output is correct
48 Correct 40 ms 8032 KB Output is correct
49 Correct 41 ms 8032 KB Output is correct
50 Correct 38 ms 8520 KB Output is correct
51 Correct 42 ms 8460 KB Output is correct
52 Correct 46 ms 8052 KB Output is correct
53 Correct 41 ms 8028 KB Output is correct
54 Correct 43 ms 8096 KB Output is correct
55 Correct 46 ms 8420 KB Output is correct
56 Correct 37 ms 8496 KB Output is correct
57 Correct 41 ms 7876 KB Output is correct
58 Correct 43 ms 8092 KB Output is correct
59 Correct 48 ms 8108 KB Output is correct
60 Correct 42 ms 8032 KB Output is correct
61 Correct 45 ms 8092 KB Output is correct
62 Correct 48 ms 8220 KB Output is correct
63 Correct 47 ms 8100 KB Output is correct
64 Correct 41 ms 8516 KB Output is correct
65 Correct 49 ms 8504 KB Output is correct
66 Correct 48 ms 8508 KB Output is correct
67 Correct 47 ms 8384 KB Output is correct

Subtask #4
0 / 14.0

# Verdict Execution time Memory Grader output
1 Execution timed out 4014 ms 8000 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #5
0 / 17.0

# Verdict Execution time Memory Grader output
1 Execution timed out 4094 ms 2120 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #6
0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 336 KB Output is correct
2 Correct 1 ms 464 KB Output is correct
3 Correct 1 ms 336 KB Output is correct
4 Correct 1 ms 464 KB Output is correct
5 Correct 1 ms 464 KB Output is correct
6 Correct 1 ms 464 KB Output is correct
7 Correct 1 ms 464 KB Output is correct
8 Correct 1 ms 464 KB Output is correct
9 Correct 1 ms 464 KB Output is correct
10 Correct 1 ms 464 KB Output is correct
11 Correct 1 ms 464 KB Output is correct
12 Correct 0 ms 208 KB Output is correct
13 Correct 1 ms 464 KB Output is correct
14 Correct 1 ms 464 KB Output is correct
15 Correct 1 ms 336 KB Output is correct
16 Correct 1 ms 464 KB Output is correct
17 Correct 1 ms 588 KB Output is correct
18 Correct 1 ms 464 KB Output is correct
19 Correct 1 ms 464 KB Output is correct
20 Correct 1 ms 336 KB Output is correct
21 Correct 1 ms 336 KB Output is correct
22 Correct 1 ms 464 KB Output is correct
23 Correct 1 ms 464 KB Output is correct
24 Correct 1 ms 464 KB Output is correct
25 Correct 1 ms 336 KB Output is correct
26 Correct 1 ms 464 KB Output is correct
27 Correct 1 ms 464 KB Output is correct
28 Correct 1 ms 464 KB Output is correct
29 Correct 1 ms 464 KB Output is correct
30 Correct 1 ms 464 KB Output is correct
31 Correct 2 ms 464 KB Output is correct
32 Correct 2 ms 464 KB Output is correct
33 Correct 1 ms 464 KB Output is correct
34 Correct 1 ms 464 KB Output is correct
35 Correct 1 ms 464 KB Output is correct
36 Correct 41 ms 5400 KB Output is correct
37 Correct 43 ms 8036 KB Output is correct
38 Correct 49 ms 8120 KB Output is correct
39 Correct 38 ms 8120 KB Output is correct
40 Correct 45 ms 8120 KB Output is correct
41 Correct 45 ms 7996 KB Output is correct
42 Correct 43 ms 8120 KB Output is correct
43 Correct 44 ms 8484 KB Output is correct
44 Correct 37 ms 8460 KB Output is correct
45 Correct 41 ms 8368 KB Output is correct
46 Correct 40 ms 8336 KB Output is correct
47 Correct 47 ms 8088 KB Output is correct
48 Correct 40 ms 8032 KB Output is correct
49 Correct 41 ms 8032 KB Output is correct
50 Correct 38 ms 8520 KB Output is correct
51 Correct 42 ms 8460 KB Output is correct
52 Correct 46 ms 8052 KB Output is correct
53 Correct 41 ms 8028 KB Output is correct
54 Correct 43 ms 8096 KB Output is correct
55 Correct 46 ms 8420 KB Output is correct
56 Correct 37 ms 8496 KB Output is correct
57 Correct 41 ms 7876 KB Output is correct
58 Correct 43 ms 8092 KB Output is correct
59 Correct 48 ms 8108 KB Output is correct
60 Correct 42 ms 8032 KB Output is correct
61 Correct 45 ms 8092 KB Output is correct
62 Correct 48 ms 8220 KB Output is correct
63 Correct 47 ms 8100 KB Output is correct
64 Correct 41 ms 8516 KB Output is correct
65 Correct 49 ms 8504 KB Output is correct
66 Correct 48 ms 8508 KB Output is correct
67 Correct 47 ms 8384 KB Output is correct
68 Execution timed out 4014 ms 8000 KB Time limit exceeded
69 Halted 0 ms 0 KB -

Subtask #7
0 / 23.0

# Verdict Execution time Memory Grader output
1 Execution timed out 4101 ms 5484 KB Time limit exceeded
2 Halted 0 ms 0 KB -