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Submission #950731

# Submission time Handle Problem Language Result Execution time Memory
950731 2024-03-20T15:52:41 Z Dec0Dedd Radio Towers (IOI22_towers) C++17
11 / 100
 17 ms 15956 KB 
#include <bits/stdc++.h>
#include "towers.h"

using namespace std;

typedef long long ll;
typedef pair<int, int> pii;

const int N = 2e3+10;

int n, hx[N], mx[N][N];

void init(int _n, vector<int> _h) {
    n=_n;
    for (int i=1; i<=n; ++i) hx[i]=_h[i-1];

    for (int i=1; i<=n; ++i) {
        mx[i][i]=hx[i];
        for (int j=i+1; j<=n; ++j) mx[i][j]=max(mx[i][j-1], hx[j]);
    }
}

vector<int> G[N];

bool vis[N];
int dfs(int v) {
    vis[v]=true;

    int res=1;
    for (auto u : G[v]) {
        if (vis[u]) continue;
        res+=dfs(u);
    } return res;
}


int max_towers(int l, int r, int d) {
    for (int i=0; i<=n; ++i) G[i].clear();
    ++l, ++r;

    vector<pii> v;
    for (int i=l; i<=r; ++i) v.push_back({hx[i], i});
    sort(v.begin(), v.end());

    bool us[n+1]={};
    for (int i=l; i<=r; ++i) us[i]=true;
    while (!v.empty()) {
        pii x=v.back(); v.pop_back();

        bool ok=true;
        for (int i=l; i<=r; ++i) {
            if (!us[i]) continue;
            if (i == x.second) continue;
            int j=x.second;
            if (abs(i-j) == 1) ok=false;

            if (i < j) {
                if (max(hx[i], hx[j]) > mx[i+1][j-1]-d) ok=false;
            } else {
                if (max(hx[i], hx[j]) > mx[j+1][i-1]-d) ok=false;
            }
        }

        if (!ok) us[x.second]=false;
    }

    int cnt=0;
    for (int i=l; i<=r; ++i) cnt+=us[i];
    return cnt;
}

Subtask #1
0 / 4.0

# Verdict Execution time Memory Grader output
1 Runtime error 7 ms 1492 KB Execution killed with signal 11
2 Halted 0 ms 0 KB -

Subtask #2
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 4440 KB Output is correct
2 Correct 8 ms 15564 KB Output is correct
3 Correct 7 ms 15448 KB Output is correct
4 Correct 6 ms 15704 KB Output is correct
5 Correct 7 ms 15704 KB Output is correct
6 Correct 5 ms 15448 KB Output is correct
7 Correct 6 ms 15448 KB Output is correct
8 Correct 5 ms 15448 KB Output is correct
9 Correct 5 ms 15692 KB Output is correct
10 Correct 4 ms 15448 KB Output is correct
11 Correct 5 ms 15448 KB Output is correct
12 Correct 0 ms 344 KB Output is correct
13 Correct 5 ms 15704 KB Output is correct
14 Correct 6 ms 15704 KB Output is correct
15 Correct 5 ms 15448 KB Output is correct
16 Correct 10 ms 15956 KB Output is correct
17 Correct 5 ms 15704 KB Output is correct
18 Correct 4 ms 15532 KB Output is correct
19 Correct 5 ms 15448 KB Output is correct
20 Correct 17 ms 15704 KB Output is correct
21 Correct 15 ms 15712 KB Output is correct
22 Correct 15 ms 15704 KB Output is correct
23 Correct 10 ms 15704 KB Output is correct
24 Correct 12 ms 15704 KB Output is correct
25 Correct 3 ms 8792 KB Output is correct
26 Correct 16 ms 15716 KB Output is correct
27 Correct 14 ms 15704 KB Output is correct
28 Correct 15 ms 15712 KB Output is correct
29 Correct 14 ms 15704 KB Output is correct
30 Correct 13 ms 15704 KB Output is correct
31 Correct 15 ms 15716 KB Output is correct
32 Correct 14 ms 15704 KB Output is correct
33 Correct 11 ms 15704 KB Output is correct
34 Correct 11 ms 15704 KB Output is correct
35 Correct 11 ms 15712 KB Output is correct

Subtask #3
0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 4440 KB Output is correct
2 Correct 8 ms 15564 KB Output is correct
3 Correct 7 ms 15448 KB Output is correct
4 Correct 6 ms 15704 KB Output is correct
5 Correct 7 ms 15704 KB Output is correct
6 Correct 5 ms 15448 KB Output is correct
7 Correct 6 ms 15448 KB Output is correct
8 Correct 5 ms 15448 KB Output is correct
9 Correct 5 ms 15692 KB Output is correct
10 Correct 4 ms 15448 KB Output is correct
11 Correct 5 ms 15448 KB Output is correct
12 Correct 0 ms 344 KB Output is correct
13 Correct 5 ms 15704 KB Output is correct
14 Correct 6 ms 15704 KB Output is correct
15 Correct 5 ms 15448 KB Output is correct
16 Correct 10 ms 15956 KB Output is correct
17 Correct 5 ms 15704 KB Output is correct
18 Correct 4 ms 15532 KB Output is correct
19 Correct 5 ms 15448 KB Output is correct
20 Correct 17 ms 15704 KB Output is correct
21 Correct 15 ms 15712 KB Output is correct
22 Correct 15 ms 15704 KB Output is correct
23 Correct 10 ms 15704 KB Output is correct
24 Correct 12 ms 15704 KB Output is correct
25 Correct 3 ms 8792 KB Output is correct
26 Correct 16 ms 15716 KB Output is correct
27 Correct 14 ms 15704 KB Output is correct
28 Correct 15 ms 15712 KB Output is correct
29 Correct 14 ms 15704 KB Output is correct
30 Correct 13 ms 15704 KB Output is correct
31 Correct 15 ms 15716 KB Output is correct
32 Correct 14 ms 15704 KB Output is correct
33 Correct 11 ms 15704 KB Output is correct
34 Correct 11 ms 15704 KB Output is correct
35 Correct 11 ms 15712 KB Output is correct
36 Runtime error 8 ms 1624 KB Execution killed with signal 11
37 Halted 0 ms 0 KB -

Subtask #4
0 / 14.0

# Verdict Execution time Memory Grader output
1 Runtime error 12 ms 2156 KB Execution killed with signal 11
2 Halted 0 ms 0 KB -

Subtask #5
0 / 17.0

# Verdict Execution time Memory Grader output
1 Runtime error 3 ms 828 KB Execution killed with signal 11
2 Halted 0 ms 0 KB -

Subtask #6
0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 4440 KB Output is correct
2 Correct 8 ms 15564 KB Output is correct
3 Correct 7 ms 15448 KB Output is correct
4 Correct 6 ms 15704 KB Output is correct
5 Correct 7 ms 15704 KB Output is correct
6 Correct 5 ms 15448 KB Output is correct
7 Correct 6 ms 15448 KB Output is correct
8 Correct 5 ms 15448 KB Output is correct
9 Correct 5 ms 15692 KB Output is correct
10 Correct 4 ms 15448 KB Output is correct
11 Correct 5 ms 15448 KB Output is correct
12 Correct 0 ms 344 KB Output is correct
13 Correct 5 ms 15704 KB Output is correct
14 Correct 6 ms 15704 KB Output is correct
15 Correct 5 ms 15448 KB Output is correct
16 Correct 10 ms 15956 KB Output is correct
17 Correct 5 ms 15704 KB Output is correct
18 Correct 4 ms 15532 KB Output is correct
19 Correct 5 ms 15448 KB Output is correct
20 Correct 17 ms 15704 KB Output is correct
21 Correct 15 ms 15712 KB Output is correct
22 Correct 15 ms 15704 KB Output is correct
23 Correct 10 ms 15704 KB Output is correct
24 Correct 12 ms 15704 KB Output is correct
25 Correct 3 ms 8792 KB Output is correct
26 Correct 16 ms 15716 KB Output is correct
27 Correct 14 ms 15704 KB Output is correct
28 Correct 15 ms 15712 KB Output is correct
29 Correct 14 ms 15704 KB Output is correct
30 Correct 13 ms 15704 KB Output is correct
31 Correct 15 ms 15716 KB Output is correct
32 Correct 14 ms 15704 KB Output is correct
33 Correct 11 ms 15704 KB Output is correct
34 Correct 11 ms 15704 KB Output is correct
35 Correct 11 ms 15712 KB Output is correct
36 Runtime error 8 ms 1624 KB Execution killed with signal 11
37 Halted 0 ms 0 KB -

Subtask #7
0 / 23.0

# Verdict Execution time Memory Grader output
1 Runtime error 7 ms 1492 KB Execution killed with signal 11
2 Halted 0 ms 0 KB -