oj.uz

Submission #835430

# Submission time Handle Problem Language Result Execution time Memory
835430 2023-08-23T14:25:37 Z SamAnd Radio Towers (IOI22_towers) C++17
56 / 100
 1140 ms 77608 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;

int z;
int s[N * 18 * 18];
int sl[N * 18 * 18], sr[N * 18 * 18];
void ubdy(int tl, int tr, int l, int r, int posy)
{
    if (l > r)
        return;
    if (tl == l && tr == r)
    {
        s[posy]++;
        return;
    }
    int m = (tl + tr) / 2;
    if (sl[posy] == 0)
        sl[posy] = ++z;
    if (sr[posy] == 0)
        sr[posy] = ++z;
    ubdy(tl, m, l, min(m, r), sl[posy]);
    ubdy(m + 1, tr, max(m + 1, l), r, sr[posy]);
}

int r[N * 4];
void ubdx(int tl, int tr, int lx, int rx, int ly, int ry, int posx)
{
    if (lx > rx)
        return;
    if (tl == lx && tr == rx)
    {
        if (r[posx] == 0)
            r[posx] = ++z;
        ubdy(1, n, ly, ry, r[posx]);
        return;
    }
    int m = (tl + tr) / 2;
    ubdx(tl, m, lx, min(m, rx), ly, ry, posx * 2);
    ubdx(m + 1, tr, max(m + 1, lx), rx, ly, ry, posx * 2 + 1);
}

int qryy(int tl, int tr, int y, int posy)
{
    if (posy == 0)
        return 0;
    if (tl == tr)
        return s[posy];
    int m = (tl + tr) / 2;
    if (y <= m)
        return qryy(tl, m, y, sl[posy]) + s[posy];
    return qryy(m + 1, tr, y, sr[posy]) + s[posy];
}

int qryx(int tl, int tr, int x, int y, int posx)
{
    if (tl == tr)
        return qryy(1, n, y, r[posx]);
    int m = (tl + tr) / 2;
    if (x <= m)
        return qryx(tl, m, x, y, posx * 2) + qryy(1, n, y, r[posx]);
    return qryx(m + 1, tr, x, y, posx * 2 + 1) + qryy(1, n, y, r[posx]);
}

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;
    }

    for (int i = 0; i < n; ++i)
    {
        ubdx(1, n, b[i].fi.fi, b[i].fi.se, b[i].se.fi, b[i].se.se, 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();
    }

    return qryx(1, n, L, R, 1);
}

/*
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 Incorrect 378 ms 33792 KB 31st lines differ - on the 1st token, expected: '1', found: '2'
2 Halted 0 ms 0 KB -

Subtask #2
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 464 KB Output is correct
2 Correct 2 ms 1232 KB Output is correct
3 Correct 2 ms 1104 KB Output is correct
4 Correct 2 ms 1232 KB Output is correct
5 Correct 3 ms 1232 KB Output is correct
6 Correct 2 ms 1232 KB Output is correct
7 Correct 2 ms 1168 KB Output is correct
8 Correct 2 ms 976 KB Output is correct
9 Correct 2 ms 1232 KB Output is correct
10 Correct 1 ms 976 KB Output is correct
11 Correct 2 ms 1232 KB Output is correct
12 Correct 0 ms 336 KB Output is correct
13 Correct 2 ms 1232 KB Output is correct
14 Correct 2 ms 1232 KB Output is correct
15 Correct 3 ms 1200 KB Output is correct
16 Correct 3 ms 1232 KB Output is correct
17 Correct 2 ms 1232 KB Output is correct
18 Correct 2 ms 1232 KB Output is correct
19 Correct 2 ms 976 KB Output is correct
20 Correct 2 ms 1232 KB Output is correct
21 Correct 2 ms 1232 KB Output is correct
22 Correct 2 ms 1232 KB Output is correct
23 Correct 2 ms 1232 KB Output is correct
24 Correct 1 ms 976 KB Output is correct
25 Correct 1 ms 592 KB Output is correct
26 Correct 2 ms 1104 KB Output is correct
27 Correct 2 ms 1232 KB Output is correct
28 Correct 2 ms 1232 KB Output is correct
29 Correct 2 ms 1232 KB Output is correct
30 Correct 2 ms 1232 KB Output is correct
31 Correct 2 ms 1232 KB Output is correct
32 Correct 2 ms 976 KB Output is correct
33 Correct 2 ms 1232 KB Output is correct
34 Correct 1 ms 976 KB Output is correct
35 Correct 2 ms 1232 KB Output is correct

Subtask #3
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 464 KB Output is correct
2 Correct 2 ms 1232 KB Output is correct
3 Correct 2 ms 1104 KB Output is correct
4 Correct 2 ms 1232 KB Output is correct
5 Correct 3 ms 1232 KB Output is correct
6 Correct 2 ms 1232 KB Output is correct
7 Correct 2 ms 1168 KB Output is correct
8 Correct 2 ms 976 KB Output is correct
9 Correct 2 ms 1232 KB Output is correct
10 Correct 1 ms 976 KB Output is correct
11 Correct 2 ms 1232 KB Output is correct
12 Correct 0 ms 336 KB Output is correct
13 Correct 2 ms 1232 KB Output is correct
14 Correct 2 ms 1232 KB Output is correct
15 Correct 3 ms 1200 KB Output is correct
16 Correct 3 ms 1232 KB Output is correct
17 Correct 2 ms 1232 KB Output is correct
18 Correct 2 ms 1232 KB Output is correct
19 Correct 2 ms 976 KB Output is correct
20 Correct 2 ms 1232 KB Output is correct
21 Correct 2 ms 1232 KB Output is correct
22 Correct 2 ms 1232 KB Output is correct
23 Correct 2 ms 1232 KB Output is correct
24 Correct 1 ms 976 KB Output is correct
25 Correct 1 ms 592 KB Output is correct
26 Correct 2 ms 1104 KB Output is correct
27 Correct 2 ms 1232 KB Output is correct
28 Correct 2 ms 1232 KB Output is correct
29 Correct 2 ms 1232 KB Output is correct
30 Correct 2 ms 1232 KB Output is correct
31 Correct 2 ms 1232 KB Output is correct
32 Correct 2 ms 976 KB Output is correct
33 Correct 2 ms 1232 KB Output is correct
34 Correct 1 ms 976 KB Output is correct
35 Correct 2 ms 1232 KB Output is correct
36 Correct 85 ms 41988 KB Output is correct
37 Correct 108 ms 62600 KB Output is correct
38 Correct 147 ms 64884 KB Output is correct
39 Correct 97 ms 61236 KB Output is correct
40 Correct 135 ms 67076 KB Output is correct
41 Correct 129 ms 65468 KB Output is correct
42 Correct 134 ms 67544 KB Output is correct
43 Correct 86 ms 47220 KB Output is correct
44 Correct 120 ms 70776 KB Output is correct
45 Correct 86 ms 47100 KB Output is correct
46 Correct 123 ms 74300 KB Output is correct
47 Correct 145 ms 66460 KB Output is correct
48 Correct 132 ms 67576 KB Output is correct
49 Correct 127 ms 67632 KB Output is correct
50 Correct 153 ms 66716 KB Output is correct
51 Correct 89 ms 47272 KB Output is correct
52 Correct 144 ms 66360 KB Output is correct
53 Correct 133 ms 67640 KB Output is correct
54 Correct 129 ms 67572 KB Output is correct
55 Correct 153 ms 66708 KB Output is correct
56 Correct 82 ms 47220 KB Output is correct
57 Correct 114 ms 60964 KB Output is correct
58 Correct 123 ms 64280 KB Output is correct
59 Correct 141 ms 65380 KB Output is correct
60 Correct 142 ms 67564 KB Output is correct
61 Correct 158 ms 67092 KB Output is correct
62 Correct 134 ms 66068 KB Output is correct
63 Correct 136 ms 67180 KB Output is correct
64 Correct 84 ms 47268 KB Output is correct
65 Correct 123 ms 77608 KB Output is correct
66 Correct 94 ms 59328 KB Output is correct
67 Correct 127 ms 75044 KB Output is correct

Subtask #4
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 710 ms 65928 KB Output is correct
2 Correct 869 ms 66288 KB Output is correct
3 Correct 850 ms 66468 KB Output is correct
4 Correct 943 ms 67636 KB Output is correct
5 Correct 1008 ms 67636 KB Output is correct
6 Correct 861 ms 67556 KB Output is correct
7 Correct 896 ms 67620 KB Output is correct
8 Correct 732 ms 47316 KB Output is correct
9 Correct 886 ms 66812 KB Output is correct
10 Correct 731 ms 47216 KB Output is correct
11 Correct 900 ms 66532 KB Output is correct
12 Correct 821 ms 47472 KB Output is correct
13 Correct 1140 ms 66636 KB Output is correct
14 Correct 1 ms 336 KB Output is correct
15 Correct 2 ms 1128 KB Output is correct
16 Correct 2 ms 1232 KB Output is correct
17 Correct 143 ms 66436 KB Output is correct
18 Correct 141 ms 67540 KB Output is correct
19 Correct 132 ms 67592 KB Output is correct
20 Correct 162 ms 66696 KB Output is correct
21 Correct 83 ms 47256 KB Output is correct
22 Correct 146 ms 66404 KB Output is correct
23 Correct 128 ms 67608 KB Output is correct
24 Correct 136 ms 67612 KB Output is correct
25 Correct 152 ms 66724 KB Output is correct
26 Correct 83 ms 47216 KB Output is correct
27 Correct 2 ms 1232 KB Output is correct
28 Correct 2 ms 1232 KB Output is correct
29 Correct 2 ms 1232 KB Output is correct
30 Correct 2 ms 1232 KB Output is correct
31 Correct 2 ms 976 KB Output is correct
32 Correct 2 ms 1232 KB Output is correct
33 Correct 3 ms 1232 KB Output is correct
34 Correct 2 ms 1232 KB Output is correct
35 Correct 2 ms 1232 KB Output is correct
36 Correct 1 ms 976 KB Output is correct

Subtask #5
0 / 17.0

# Verdict Execution time Memory Grader output
1 Incorrect 292 ms 14152 KB 2nd lines differ - on the 1st token, expected: '7063', found: '7197'
2 Halted 0 ms 0 KB -

Subtask #6
19.0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 464 KB Output is correct
2 Correct 2 ms 1232 KB Output is correct
3 Correct 2 ms 1104 KB Output is correct
4 Correct 2 ms 1232 KB Output is correct
5 Correct 3 ms 1232 KB Output is correct
6 Correct 2 ms 1232 KB Output is correct
7 Correct 2 ms 1168 KB Output is correct
8 Correct 2 ms 976 KB Output is correct
9 Correct 2 ms 1232 KB Output is correct
10 Correct 1 ms 976 KB Output is correct
11 Correct 2 ms 1232 KB Output is correct
12 Correct 0 ms 336 KB Output is correct
13 Correct 2 ms 1232 KB Output is correct
14 Correct 2 ms 1232 KB Output is correct
15 Correct 3 ms 1200 KB Output is correct
16 Correct 3 ms 1232 KB Output is correct
17 Correct 2 ms 1232 KB Output is correct
18 Correct 2 ms 1232 KB Output is correct
19 Correct 2 ms 976 KB Output is correct
20 Correct 2 ms 1232 KB Output is correct
21 Correct 2 ms 1232 KB Output is correct
22 Correct 2 ms 1232 KB Output is correct
23 Correct 2 ms 1232 KB Output is correct
24 Correct 1 ms 976 KB Output is correct
25 Correct 1 ms 592 KB Output is correct
26 Correct 2 ms 1104 KB Output is correct
27 Correct 2 ms 1232 KB Output is correct
28 Correct 2 ms 1232 KB Output is correct
29 Correct 2 ms 1232 KB Output is correct
30 Correct 2 ms 1232 KB Output is correct
31 Correct 2 ms 1232 KB Output is correct
32 Correct 2 ms 976 KB Output is correct
33 Correct 2 ms 1232 KB Output is correct
34 Correct 1 ms 976 KB Output is correct
35 Correct 2 ms 1232 KB Output is correct
36 Correct 85 ms 41988 KB Output is correct
37 Correct 108 ms 62600 KB Output is correct
38 Correct 147 ms 64884 KB Output is correct
39 Correct 97 ms 61236 KB Output is correct
40 Correct 135 ms 67076 KB Output is correct
41 Correct 129 ms 65468 KB Output is correct
42 Correct 134 ms 67544 KB Output is correct
43 Correct 86 ms 47220 KB Output is correct
44 Correct 120 ms 70776 KB Output is correct
45 Correct 86 ms 47100 KB Output is correct
46 Correct 123 ms 74300 KB Output is correct
47 Correct 145 ms 66460 KB Output is correct
48 Correct 132 ms 67576 KB Output is correct
49 Correct 127 ms 67632 KB Output is correct
50 Correct 153 ms 66716 KB Output is correct
51 Correct 89 ms 47272 KB Output is correct
52 Correct 144 ms 66360 KB Output is correct
53 Correct 133 ms 67640 KB Output is correct
54 Correct 129 ms 67572 KB Output is correct
55 Correct 153 ms 66708 KB Output is correct
56 Correct 82 ms 47220 KB Output is correct
57 Correct 114 ms 60964 KB Output is correct
58 Correct 123 ms 64280 KB Output is correct
59 Correct 141 ms 65380 KB Output is correct
60 Correct 142 ms 67564 KB Output is correct
61 Correct 158 ms 67092 KB Output is correct
62 Correct 134 ms 66068 KB Output is correct
63 Correct 136 ms 67180 KB Output is correct
64 Correct 84 ms 47268 KB Output is correct
65 Correct 123 ms 77608 KB Output is correct
66 Correct 94 ms 59328 KB Output is correct
67 Correct 127 ms 75044 KB Output is correct
68 Correct 710 ms 65928 KB Output is correct
69 Correct 869 ms 66288 KB Output is correct
70 Correct 850 ms 66468 KB Output is correct
71 Correct 943 ms 67636 KB Output is correct
72 Correct 1008 ms 67636 KB Output is correct
73 Correct 861 ms 67556 KB Output is correct
74 Correct 896 ms 67620 KB Output is correct
75 Correct 732 ms 47316 KB Output is correct
76 Correct 886 ms 66812 KB Output is correct
77 Correct 731 ms 47216 KB Output is correct
78 Correct 900 ms 66532 KB Output is correct
79 Correct 821 ms 47472 KB Output is correct
80 Correct 1140 ms 66636 KB Output is correct
81 Correct 1 ms 336 KB Output is correct
82 Correct 2 ms 1128 KB Output is correct
83 Correct 2 ms 1232 KB Output is correct
84 Correct 143 ms 66436 KB Output is correct
85 Correct 141 ms 67540 KB Output is correct
86 Correct 132 ms 67592 KB Output is correct
87 Correct 162 ms 66696 KB Output is correct
88 Correct 83 ms 47256 KB Output is correct
89 Correct 146 ms 66404 KB Output is correct
90 Correct 128 ms 67608 KB Output is correct
91 Correct 136 ms 67612 KB Output is correct
92 Correct 152 ms 66724 KB Output is correct
93 Correct 83 ms 47216 KB Output is correct
94 Correct 2 ms 1232 KB Output is correct
95 Correct 2 ms 1232 KB Output is correct
96 Correct 2 ms 1232 KB Output is correct
97 Correct 2 ms 1232 KB Output is correct
98 Correct 2 ms 976 KB Output is correct
99 Correct 2 ms 1232 KB Output is correct
100 Correct 3 ms 1232 KB Output is correct
101 Correct 2 ms 1232 KB Output is correct
102 Correct 2 ms 1232 KB Output is correct
103 Correct 1 ms 976 KB Output is correct
104 Correct 806 ms 58004 KB Output is correct
105 Correct 799 ms 65248 KB Output is correct
106 Correct 920 ms 63536 KB Output is correct
107 Correct 915 ms 66220 KB Output is correct
108 Correct 856 ms 61740 KB Output is correct
109 Correct 931 ms 66020 KB Output is correct
110 Correct 942 ms 67624 KB Output is correct
111 Correct 901 ms 47292 KB Output is correct
112 Correct 929 ms 77348 KB Output is correct
113 Correct 749 ms 71332 KB Output is correct
114 Correct 768 ms 71036 KB Output is correct

Subtask #7
0 / 23.0

# Verdict Execution time Memory Grader output
1 Incorrect 378 ms 33792 KB 31st lines differ - on the 1st token, expected: '1', found: '2'
2 Halted 0 ms 0 KB -