oj.uz

Submission #719826

# Submission time Handle Problem Language Result Execution time Memory
719826 2023-04-06T18:50:37 Z Johann Cat in a tree (BOI17_catinatree) C++14
100 / 100
 149 ms 15056 KB 
#include <bits/stdc++.h>
using namespace std;

#define vb vector<bool>
#define vi vector<int>
#define vvi vector<vi>
#define F0R(i, n) for (int i = 0; i < (n); ++i)

void dfs(vvi & adj, int v, int p, int d, vi & blocked) {
    if (blocked[v] >= d) return;
    blocked[v] = d;
    for (int u : adj[v]) {
        if (u == p) continue;
        dfs(adj, u, v, d-1, blocked);
    }
}

int main() {
    ios::sync_with_stdio(false);
    cin.tie(0);
    cout.tie(0);

    int n, D;
    cin >> n >> D;

    vvi adj(n);
    for (int i = 1, p; i < n; ++i) {
        cin >> p;
        adj[p].push_back(i);
        adj[i].push_back(p);
    }

    vi obh;
    vb visited(n, false);
    queue<int> q;
    q.push(0);
    while (!q.empty()){
        int v = q.front(); q.pop();
        visited[v] = true;
        obh.push_back(v);
        for (int u : adj[v]) {
            if (!visited[u]) q.push(u);
        }
    }

    vi blocked(n, 0);
    int ans = 0;
    for (int i = n-1; i >= 0; --i) {
        int v = obh[i];
        if (blocked[v] > 0) continue;
        // cout << "v: " << v << endl;
        ++ans;
        dfs(adj, v, v, D, blocked);
    }

    cout << ans << "\n";
}

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 1 ms 316 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 1 ms 312 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 1 ms 316 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 1 ms 324 KB Output is correct
13 Correct 1 ms 212 KB Output is correct
14 Correct 1 ms 212 KB Output is correct
15 Correct 1 ms 212 KB Output is correct
16 Correct 1 ms 212 KB Output is correct
17 Correct 1 ms 212 KB Output is correct
18 Correct 1 ms 212 KB Output is correct
19 Correct 0 ms 212 KB Output is correct
20 Correct 1 ms 212 KB Output is correct

Subtask #2
40.0 / 40.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 1 ms 316 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 1 ms 312 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 1 ms 316 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 1 ms 324 KB Output is correct
13 Correct 1 ms 212 KB Output is correct
14 Correct 1 ms 212 KB Output is correct
15 Correct 1 ms 212 KB Output is correct
16 Correct 1 ms 212 KB Output is correct
17 Correct 1 ms 212 KB Output is correct
18 Correct 1 ms 212 KB Output is correct
19 Correct 0 ms 212 KB Output is correct
20 Correct 1 ms 212 KB Output is correct
21 Correct 1 ms 448 KB Output is correct
22 Correct 1 ms 316 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 324 KB Output is correct
28 Correct 2 ms 340 KB Output is correct
29 Correct 1 ms 340 KB Output is correct
30 Correct 1 ms 340 KB Output is correct
31 Correct 1 ms 340 KB Output is correct
32 Correct 1 ms 340 KB Output is correct
33 Correct 1 ms 340 KB Output is correct
34 Correct 1 ms 320 KB Output is correct
35 Correct 1 ms 340 KB Output is correct
36 Correct 1 ms 448 KB Output is correct
37 Correct 1 ms 340 KB Output is correct
38 Correct 1 ms 340 KB Output is correct
39 Correct 1 ms 340 KB Output is correct
40 Correct 1 ms 340 KB Output is correct

Subtask #3
49.0 / 49.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 1 ms 316 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 1 ms 312 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 1 ms 316 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 1 ms 324 KB Output is correct
13 Correct 1 ms 212 KB Output is correct
14 Correct 1 ms 212 KB Output is correct
15 Correct 1 ms 212 KB Output is correct
16 Correct 1 ms 212 KB Output is correct
17 Correct 1 ms 212 KB Output is correct
18 Correct 1 ms 212 KB Output is correct
19 Correct 0 ms 212 KB Output is correct
20 Correct 1 ms 212 KB Output is correct
21 Correct 1 ms 448 KB Output is correct
22 Correct 1 ms 316 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 324 KB Output is correct
28 Correct 2 ms 340 KB Output is correct
29 Correct 1 ms 340 KB Output is correct
30 Correct 1 ms 340 KB Output is correct
31 Correct 1 ms 340 KB Output is correct
32 Correct 1 ms 340 KB Output is correct
33 Correct 1 ms 340 KB Output is correct
34 Correct 1 ms 320 KB Output is correct
35 Correct 1 ms 340 KB Output is correct
36 Correct 1 ms 448 KB Output is correct
37 Correct 1 ms 340 KB Output is correct
38 Correct 1 ms 340 KB Output is correct
39 Correct 1 ms 340 KB Output is correct
40 Correct 1 ms 340 KB Output is correct
41 Correct 50 ms 13764 KB Output is correct
42 Correct 34 ms 7264 KB Output is correct
43 Correct 38 ms 7332 KB Output is correct
44 Correct 41 ms 7344 KB Output is correct
45 Correct 35 ms 7276 KB Output is correct
46 Correct 86 ms 14380 KB Output is correct
47 Correct 149 ms 14308 KB Output is correct
48 Correct 86 ms 14300 KB Output is correct
49 Correct 83 ms 14316 KB Output is correct
50 Correct 20 ms 7732 KB Output is correct
51 Correct 23 ms 7684 KB Output is correct
52 Correct 22 ms 7692 KB Output is correct
53 Correct 58 ms 15056 KB Output is correct
54 Correct 68 ms 14868 KB Output is correct
55 Correct 73 ms 14756 KB Output is correct
56 Correct 1 ms 468 KB Output is correct
57 Correct 7 ms 1876 KB Output is correct
58 Correct 21 ms 7988 KB Output is correct
59 Correct 76 ms 15044 KB Output is correct
60 Correct 72 ms 14012 KB Output is correct
61 Correct 71 ms 13428 KB Output is correct