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Submission #714911

# Submission time Handle Problem Language Result Execution time Memory
714911 2023-03-25T12:41:47 Z MilosMilutinovic Cat in a tree (BOI17_catinatree) C++14
100 / 100
 110 ms 28080 KB 
#include <bits/stdc++.h>

using i64 = long long;

int main() {
    std::ios::sync_with_stdio(false);
    std::cin.tie(nullptr);

    int n, k;
    std::cin >> n >> k;

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

    std::function<std::pair<int, int>(int, int)> Dfs = [&](int v, int pv) {
        std::vector<int> dist(1, 0);
        int f = 1;
        for (int u : adj[v]) {
            if (u == pv) {
                continue;
            }
            std::pair<int, int> x = Dfs(u, v);
            f += x.first;
            dist.push_back(x.second);
        }
        std::sort(dist.begin(), dist.end());
        std::reverse(dist.begin(), dist.end());
        while (dist.size() > 1 && dist.back() + dist[dist.size() - 2] < k) {
            dist.pop_back();
            f -= 1;
        }
        return std::make_pair(f, dist.back() + 1);
    };

    std::cout << Dfs(0, 0).first << "\n";

    return 0;
}

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 320 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 1 ms 328 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 1 ms 212 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 316 KB Output is correct
16 Correct 1 ms 212 KB Output is correct
17 Correct 1 ms 324 KB Output is correct
18 Correct 1 ms 316 KB Output is correct
19 Correct 1 ms 212 KB Output is correct
20 Correct 1 ms 324 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 320 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 1 ms 328 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 1 ms 212 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 316 KB Output is correct
16 Correct 1 ms 212 KB Output is correct
17 Correct 1 ms 324 KB Output is correct
18 Correct 1 ms 316 KB Output is correct
19 Correct 1 ms 212 KB Output is correct
20 Correct 1 ms 324 KB Output is correct
21 Correct 1 ms 596 KB Output is correct
22 Correct 1 ms 340 KB Output is correct
23 Correct 1 ms 316 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 340 KB Output is correct
28 Correct 1 ms 340 KB Output is correct
29 Correct 1 ms 328 KB Output is correct
30 Correct 1 ms 340 KB Output is correct
31 Correct 1 ms 324 KB Output is correct
32 Correct 1 ms 340 KB Output is correct
33 Correct 1 ms 320 KB Output is correct
34 Correct 1 ms 340 KB Output is correct
35 Correct 1 ms 340 KB Output is correct
36 Correct 1 ms 340 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 468 KB Output is correct
40 Correct 1 ms 596 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 320 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 1 ms 328 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 1 ms 212 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 316 KB Output is correct
16 Correct 1 ms 212 KB Output is correct
17 Correct 1 ms 324 KB Output is correct
18 Correct 1 ms 316 KB Output is correct
19 Correct 1 ms 212 KB Output is correct
20 Correct 1 ms 324 KB Output is correct
21 Correct 1 ms 596 KB Output is correct
22 Correct 1 ms 340 KB Output is correct
23 Correct 1 ms 316 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 340 KB Output is correct
28 Correct 1 ms 340 KB Output is correct
29 Correct 1 ms 328 KB Output is correct
30 Correct 1 ms 340 KB Output is correct
31 Correct 1 ms 324 KB Output is correct
32 Correct 1 ms 340 KB Output is correct
33 Correct 1 ms 320 KB Output is correct
34 Correct 1 ms 340 KB Output is correct
35 Correct 1 ms 340 KB Output is correct
36 Correct 1 ms 340 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 468 KB Output is correct
40 Correct 1 ms 596 KB Output is correct
41 Correct 48 ms 12236 KB Output is correct
42 Correct 39 ms 6440 KB Output is correct
43 Correct 46 ms 6444 KB Output is correct
44 Correct 31 ms 6356 KB Output is correct
45 Correct 41 ms 6400 KB Output is correct
46 Correct 110 ms 12540 KB Output is correct
47 Correct 93 ms 12548 KB Output is correct
48 Correct 93 ms 12620 KB Output is correct
49 Correct 108 ms 12572 KB Output is correct
50 Correct 31 ms 6740 KB Output is correct
51 Correct 22 ms 6612 KB Output is correct
52 Correct 25 ms 6708 KB Output is correct
53 Correct 61 ms 12984 KB Output is correct
54 Correct 64 ms 12968 KB Output is correct
55 Correct 58 ms 13048 KB Output is correct
56 Correct 1 ms 596 KB Output is correct
57 Correct 8 ms 4692 KB Output is correct
58 Correct 40 ms 20432 KB Output is correct
59 Correct 94 ms 28080 KB Output is correct
60 Correct 54 ms 12588 KB Output is correct
61 Correct 65 ms 11844 KB Output is correct