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Submission #703143

# Submission time Handle Problem Language Result Execution time Memory
703143 2023-02-26T08:28:51 Z browntoad Cat in a tree (BOI17_catinatree) C++14
100 / 100
 151 ms 35512 KB 
#include <bits/stdc++.h>
using namespace std;
const int maxn = 2e5+5;
int n, d;
vector<int> graph[maxn], dp(maxn);
multiset<int> pen[maxn]; // pending
void dfs(int x, int dep){
    for (int i=0; i<graph[x].size(); i++){
        dfs(graph[x][i], dep+1);
        dp[x]+=dp[graph[x][i]];
        if (pen[graph[x][i]].size() > pen[x].size()) swap(pen[x], pen[graph[x][i]]);
        for (int j:pen[graph[x][i]]) pen[x].insert(j);
    }
    while(pen[x].size()>=1 && (*prev(pen[x].end()))>=dep+d) {
        dp[x]++;
        pen[x].erase(prev(pen[x].end()));
    }
    while(pen[x].size()>=2){
        if ((*pen[x].begin())-dep+(*next(pen[x].begin()))-dep < d){
            pen[x].erase(pen[x].begin());
        }
        else break;
    }
    if (pen[x].size()==0) pen[x].insert(dep);
}

int main(){
    cin>>n>>d;
    for (int i=2; i<=n; i++){
        int x; cin>>x;
        graph[x+1].push_back(i);
    }
    dfs(1, 0);
    cout<<dp[1]+pen[1].size()<<endl;
}

Compilation message

catinatree.cpp: In function 'void dfs(int, int)':
catinatree.cpp:8:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
    8 |     for (int i=0; i<graph[x].size(); i++){
      |                   ~^~~~~~~~~~~~~~~~

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 11 ms 15060 KB Output is correct
2 Correct 9 ms 15060 KB Output is correct
3 Correct 9 ms 15060 KB Output is correct
4 Correct 8 ms 15188 KB Output is correct
5 Correct 9 ms 15188 KB Output is correct
6 Correct 7 ms 15120 KB Output is correct
7 Correct 9 ms 15188 KB Output is correct
8 Correct 10 ms 15060 KB Output is correct
9 Correct 9 ms 15188 KB Output is correct
10 Correct 8 ms 15188 KB Output is correct
11 Correct 7 ms 15188 KB Output is correct
12 Correct 9 ms 15188 KB Output is correct
13 Correct 8 ms 15188 KB Output is correct
14 Correct 10 ms 15184 KB Output is correct
15 Correct 8 ms 15108 KB Output is correct
16 Correct 8 ms 15188 KB Output is correct
17 Correct 8 ms 15188 KB Output is correct
18 Correct 7 ms 15112 KB Output is correct
19 Correct 8 ms 15112 KB Output is correct
20 Correct 7 ms 15188 KB Output is correct

Subtask #2
40.0 / 40.0

# Verdict Execution time Memory Grader output
1 Correct 11 ms 15060 KB Output is correct
2 Correct 9 ms 15060 KB Output is correct
3 Correct 9 ms 15060 KB Output is correct
4 Correct 8 ms 15188 KB Output is correct
5 Correct 9 ms 15188 KB Output is correct
6 Correct 7 ms 15120 KB Output is correct
7 Correct 9 ms 15188 KB Output is correct
8 Correct 10 ms 15060 KB Output is correct
9 Correct 9 ms 15188 KB Output is correct
10 Correct 8 ms 15188 KB Output is correct
11 Correct 7 ms 15188 KB Output is correct
12 Correct 9 ms 15188 KB Output is correct
13 Correct 8 ms 15188 KB Output is correct
14 Correct 10 ms 15184 KB Output is correct
15 Correct 8 ms 15108 KB Output is correct
16 Correct 8 ms 15188 KB Output is correct
17 Correct 8 ms 15188 KB Output is correct
18 Correct 7 ms 15112 KB Output is correct
19 Correct 8 ms 15112 KB Output is correct
20 Correct 7 ms 15188 KB Output is correct
21 Correct 10 ms 15316 KB Output is correct
22 Correct 8 ms 15188 KB Output is correct
23 Correct 8 ms 15108 KB Output is correct
24 Correct 8 ms 15188 KB Output is correct
25 Correct 10 ms 15228 KB Output is correct
26 Correct 9 ms 15188 KB Output is correct
27 Correct 9 ms 15188 KB Output is correct
28 Correct 8 ms 15188 KB Output is correct
29 Correct 11 ms 15188 KB Output is correct
30 Correct 10 ms 15188 KB Output is correct
31 Correct 11 ms 15212 KB Output is correct
32 Correct 10 ms 15216 KB Output is correct
33 Correct 9 ms 15204 KB Output is correct
34 Correct 9 ms 15188 KB Output is correct
35 Correct 7 ms 15256 KB Output is correct
36 Correct 9 ms 15188 KB Output is correct
37 Correct 8 ms 15188 KB Output is correct
38 Correct 9 ms 15288 KB Output is correct
39 Correct 9 ms 15228 KB Output is correct
40 Correct 9 ms 15316 KB Output is correct

Subtask #3
49.0 / 49.0

# Verdict Execution time Memory Grader output
1 Correct 11 ms 15060 KB Output is correct
2 Correct 9 ms 15060 KB Output is correct
3 Correct 9 ms 15060 KB Output is correct
4 Correct 8 ms 15188 KB Output is correct
5 Correct 9 ms 15188 KB Output is correct
6 Correct 7 ms 15120 KB Output is correct
7 Correct 9 ms 15188 KB Output is correct
8 Correct 10 ms 15060 KB Output is correct
9 Correct 9 ms 15188 KB Output is correct
10 Correct 8 ms 15188 KB Output is correct
11 Correct 7 ms 15188 KB Output is correct
12 Correct 9 ms 15188 KB Output is correct
13 Correct 8 ms 15188 KB Output is correct
14 Correct 10 ms 15184 KB Output is correct
15 Correct 8 ms 15108 KB Output is correct
16 Correct 8 ms 15188 KB Output is correct
17 Correct 8 ms 15188 KB Output is correct
18 Correct 7 ms 15112 KB Output is correct
19 Correct 8 ms 15112 KB Output is correct
20 Correct 7 ms 15188 KB Output is correct
21 Correct 10 ms 15316 KB Output is correct
22 Correct 8 ms 15188 KB Output is correct
23 Correct 8 ms 15108 KB Output is correct
24 Correct 8 ms 15188 KB Output is correct
25 Correct 10 ms 15228 KB Output is correct
26 Correct 9 ms 15188 KB Output is correct
27 Correct 9 ms 15188 KB Output is correct
28 Correct 8 ms 15188 KB Output is correct
29 Correct 11 ms 15188 KB Output is correct
30 Correct 10 ms 15188 KB Output is correct
31 Correct 11 ms 15212 KB Output is correct
32 Correct 10 ms 15216 KB Output is correct
33 Correct 9 ms 15204 KB Output is correct
34 Correct 9 ms 15188 KB Output is correct
35 Correct 7 ms 15256 KB Output is correct
36 Correct 9 ms 15188 KB Output is correct
37 Correct 8 ms 15188 KB Output is correct
38 Correct 9 ms 15288 KB Output is correct
39 Correct 9 ms 15228 KB Output is correct
40 Correct 9 ms 15316 KB Output is correct
41 Correct 98 ms 24896 KB Output is correct
42 Correct 81 ms 19120 KB Output is correct
43 Correct 59 ms 19148 KB Output is correct
44 Correct 62 ms 19100 KB Output is correct
45 Correct 71 ms 19140 KB Output is correct
46 Correct 145 ms 23604 KB Output is correct
47 Correct 151 ms 23000 KB Output is correct
48 Correct 129 ms 22996 KB Output is correct
49 Correct 148 ms 23036 KB Output is correct
50 Correct 66 ms 20356 KB Output is correct
51 Correct 56 ms 20332 KB Output is correct
52 Correct 55 ms 20252 KB Output is correct
53 Correct 120 ms 25468 KB Output is correct
54 Correct 123 ms 25544 KB Output is correct
55 Correct 146 ms 25512 KB Output is correct
56 Correct 9 ms 15316 KB Output is correct
57 Correct 21 ms 18364 KB Output is correct
58 Correct 50 ms 29704 KB Output is correct
59 Correct 115 ms 35512 KB Output is correct
60 Correct 91 ms 24304 KB Output is correct
61 Correct 141 ms 22176 KB Output is correct