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Submission #762846

# Submission time Handle Problem Language Result Execution time Memory
762846 2023-06-21T21:04:38 Z ThegeekKnight16 Cat in a tree (BOI17_catinatree) C++17
100 / 100
 265 ms 58928 KB 
#include <bits/stdc++.h>
using namespace std;
const int MAXN = 2e5 + 10;
const int MAXK = 21;
set<pair<int, int> > verts;
array<vector<int>, MAXN> grafo;
array<int, MAXN> Prof;
array<set<pair<int, int> >, MAXN> active;
//            Prof  id
int dp[MAXN][MAXK];
int N, D;
int tmp = 0;

void dfs(int v, int p)
{
    Prof[v] = Prof[p]+1;
    active[v].emplace(Prof[v], v);

    for (auto viz : grafo[v])
    {
        if (viz == p) continue;
        dfs(viz, v);

        set<pair<int, int> > temp;
        if (active[viz].size() > active[v].size()) swap(active[v], active[viz]);
        for (auto [prof, cur] : active[viz])
        {
            if (active[v].empty()) {temp.emplace(prof, cur); continue;}
            auto lastPar = active[v].lower_bound(make_pair(prof, -1));
            if (lastPar == active[v].end())
            {
                if (prof + active[v].rbegin()->first - 2*Prof[v] + 1 <= D) active[v].clear();
                temp.emplace(prof, cur);
                continue;
            }
            int lastProf = lastPar->first;
            if (prof + lastProf - 2*Prof[v] + 1 <= D) continue;
            for (auto it = active[v].begin(); it != lastPar && prof + it->first - 2*Prof[v] + 1 <= D; it = active[v].erase(it));
            temp.emplace(prof, cur);
        }

        for (auto x : temp) active[v].insert(x);
        temp.clear();
    }
}

int main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    cin >> N >> D;
    for (int i = 1; i < N; i++)
    {
        int X;
        cin >> X;
        grafo[X].push_back(i);
        grafo[i].push_back(X);
    }

    // for (int k = 0; k < MAXK; k++) dp[N][k] = N;
    dfs(0, 0);

    cout << active[0].size() << '\n';
}

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 14420 KB Output is correct
2 Correct 7 ms 14428 KB Output is correct
3 Correct 7 ms 14428 KB Output is correct
4 Correct 7 ms 14420 KB Output is correct
5 Correct 7 ms 14348 KB Output is correct
6 Correct 7 ms 14420 KB Output is correct
7 Correct 7 ms 14420 KB Output is correct
8 Correct 8 ms 14424 KB Output is correct
9 Correct 7 ms 14424 KB Output is correct
10 Correct 8 ms 14428 KB Output is correct
11 Correct 8 ms 14420 KB Output is correct
12 Correct 6 ms 14420 KB Output is correct
13 Correct 6 ms 14420 KB Output is correct
14 Correct 7 ms 14372 KB Output is correct
15 Correct 7 ms 14428 KB Output is correct
16 Correct 7 ms 14420 KB Output is correct
17 Correct 7 ms 14420 KB Output is correct
18 Correct 7 ms 14420 KB Output is correct
19 Correct 7 ms 14420 KB Output is correct
20 Correct 8 ms 14324 KB Output is correct

Subtask #2
40.0 / 40.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 14420 KB Output is correct
2 Correct 7 ms 14428 KB Output is correct
3 Correct 7 ms 14428 KB Output is correct
4 Correct 7 ms 14420 KB Output is correct
5 Correct 7 ms 14348 KB Output is correct
6 Correct 7 ms 14420 KB Output is correct
7 Correct 7 ms 14420 KB Output is correct
8 Correct 8 ms 14424 KB Output is correct
9 Correct 7 ms 14424 KB Output is correct
10 Correct 8 ms 14428 KB Output is correct
11 Correct 8 ms 14420 KB Output is correct
12 Correct 6 ms 14420 KB Output is correct
13 Correct 6 ms 14420 KB Output is correct
14 Correct 7 ms 14372 KB Output is correct
15 Correct 7 ms 14428 KB Output is correct
16 Correct 7 ms 14420 KB Output is correct
17 Correct 7 ms 14420 KB Output is correct
18 Correct 7 ms 14420 KB Output is correct
19 Correct 7 ms 14420 KB Output is correct
20 Correct 8 ms 14324 KB Output is correct
21 Correct 7 ms 14804 KB Output is correct
22 Correct 7 ms 14428 KB Output is correct
23 Correct 7 ms 14420 KB Output is correct
24 Correct 7 ms 14420 KB Output is correct
25 Correct 8 ms 14644 KB Output is correct
26 Correct 7 ms 14420 KB Output is correct
27 Correct 7 ms 14404 KB Output is correct
28 Correct 7 ms 14548 KB Output is correct
29 Correct 7 ms 14548 KB Output is correct
30 Correct 7 ms 14560 KB Output is correct
31 Correct 7 ms 14520 KB Output is correct
32 Correct 7 ms 14552 KB Output is correct
33 Correct 7 ms 14548 KB Output is correct
34 Correct 7 ms 14548 KB Output is correct
35 Correct 8 ms 14480 KB Output is correct
36 Correct 7 ms 14548 KB Output is correct
37 Correct 7 ms 14548 KB Output is correct
38 Correct 7 ms 14548 KB Output is correct
39 Correct 7 ms 14676 KB Output is correct
40 Correct 7 ms 14816 KB Output is correct

Subtask #3
49.0 / 49.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 14420 KB Output is correct
2 Correct 7 ms 14428 KB Output is correct
3 Correct 7 ms 14428 KB Output is correct
4 Correct 7 ms 14420 KB Output is correct
5 Correct 7 ms 14348 KB Output is correct
6 Correct 7 ms 14420 KB Output is correct
7 Correct 7 ms 14420 KB Output is correct
8 Correct 8 ms 14424 KB Output is correct
9 Correct 7 ms 14424 KB Output is correct
10 Correct 8 ms 14428 KB Output is correct
11 Correct 8 ms 14420 KB Output is correct
12 Correct 6 ms 14420 KB Output is correct
13 Correct 6 ms 14420 KB Output is correct
14 Correct 7 ms 14372 KB Output is correct
15 Correct 7 ms 14428 KB Output is correct
16 Correct 7 ms 14420 KB Output is correct
17 Correct 7 ms 14420 KB Output is correct
18 Correct 7 ms 14420 KB Output is correct
19 Correct 7 ms 14420 KB Output is correct
20 Correct 8 ms 14324 KB Output is correct
21 Correct 7 ms 14804 KB Output is correct
22 Correct 7 ms 14428 KB Output is correct
23 Correct 7 ms 14420 KB Output is correct
24 Correct 7 ms 14420 KB Output is correct
25 Correct 8 ms 14644 KB Output is correct
26 Correct 7 ms 14420 KB Output is correct
27 Correct 7 ms 14404 KB Output is correct
28 Correct 7 ms 14548 KB Output is correct
29 Correct 7 ms 14548 KB Output is correct
30 Correct 7 ms 14560 KB Output is correct
31 Correct 7 ms 14520 KB Output is correct
32 Correct 7 ms 14552 KB Output is correct
33 Correct 7 ms 14548 KB Output is correct
34 Correct 7 ms 14548 KB Output is correct
35 Correct 8 ms 14480 KB Output is correct
36 Correct 7 ms 14548 KB Output is correct
37 Correct 7 ms 14548 KB Output is correct
38 Correct 7 ms 14548 KB Output is correct
39 Correct 7 ms 14676 KB Output is correct
40 Correct 7 ms 14816 KB Output is correct
41 Correct 71 ms 33540 KB Output is correct
42 Correct 159 ms 44780 KB Output is correct
43 Correct 43 ms 23332 KB Output is correct
44 Correct 44 ms 23252 KB Output is correct
45 Correct 42 ms 23244 KB Output is correct
46 Correct 265 ms 58928 KB Output is correct
47 Correct 100 ms 32212 KB Output is correct
48 Correct 125 ms 32212 KB Output is correct
49 Correct 101 ms 32120 KB Output is correct
50 Correct 34 ms 23680 KB Output is correct
51 Correct 34 ms 23432 KB Output is correct
52 Correct 35 ms 23436 KB Output is correct
53 Correct 75 ms 32656 KB Output is correct
54 Correct 93 ms 32628 KB Output is correct
55 Correct 76 ms 32620 KB Output is correct
56 Correct 8 ms 14820 KB Output is correct
57 Correct 13 ms 20972 KB Output is correct
58 Correct 38 ms 44244 KB Output is correct
59 Correct 82 ms 55492 KB Output is correct
60 Correct 67 ms 33484 KB Output is correct
61 Correct 66 ms 31196 KB Output is correct