Submission #333869

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
333869	2020-12-08T00:59:40 Z	limabeans	Cat in a tree (BOI17_catinatree)	C++17	100 / 100	103 ms	39276 KB

catinatree

#include <bits/stdc++.h>
using namespace std;

template<typename T>
void out(T x) { cout << x << endl; exit(0); }
#define watch(x) cout << (#x) << " is " << (x) << endl





using ll = long long;


const int maxn = 1e6 + 5;



int n, d;
vector<int> g[maxn];
int ans = 0;



int dfs(int at) {
    vector<int> w;
    for (int to: g[at]) {
	w.push_back(dfs(to));
    }

    if (w.empty()) {
	ans++;
	return 1;
    }

    sort(w.rbegin(),w.rend());
    int cur = w[0];
    for (int i=1; i<(int)w.size(); i++) {
	if (cur+w[i]<d) {
	    ans--; //remove nearest so far
	} else {
	    cur=w[i];
	}
    }
    if (cur>=d) {
	cur-=d;
	ans++;
    }
    return cur+1;
}


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

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


    dfs(0);
    cout<<ans<<endl;    
    return 0;
}

Subtask #1
11.0 / 11.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	17 ms	23788 KB	Output is correct
2	Correct	16 ms	23788 KB	Output is correct
3	Correct	17 ms	23788 KB	Output is correct
4	Correct	17 ms	23788 KB	Output is correct
5	Correct	17 ms	23788 KB	Output is correct
6	Correct	17 ms	23788 KB	Output is correct
7	Correct	17 ms	23808 KB	Output is correct
8	Correct	17 ms	23916 KB	Output is correct
9	Correct	17 ms	23808 KB	Output is correct
10	Correct	16 ms	23808 KB	Output is correct
11	Correct	17 ms	23788 KB	Output is correct
12	Correct	17 ms	23788 KB	Output is correct
13	Correct	17 ms	23788 KB	Output is correct
14	Correct	17 ms	23788 KB	Output is correct
15	Correct	17 ms	23788 KB	Output is correct
16	Correct	16 ms	23788 KB	Output is correct
17	Correct	18 ms	23788 KB	Output is correct
18	Correct	16 ms	23788 KB	Output is correct
19	Correct	17 ms	23788 KB	Output is correct
20	Correct	16 ms	23808 KB	Output is correct

Subtask #2
40.0 / 40.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	17 ms	23788 KB	Output is correct
2	Correct	16 ms	23788 KB	Output is correct
3	Correct	17 ms	23788 KB	Output is correct
4	Correct	17 ms	23788 KB	Output is correct
5	Correct	17 ms	23788 KB	Output is correct
6	Correct	17 ms	23788 KB	Output is correct
7	Correct	17 ms	23808 KB	Output is correct
8	Correct	17 ms	23916 KB	Output is correct
9	Correct	17 ms	23808 KB	Output is correct
10	Correct	16 ms	23808 KB	Output is correct
11	Correct	17 ms	23788 KB	Output is correct
12	Correct	17 ms	23788 KB	Output is correct
13	Correct	17 ms	23788 KB	Output is correct
14	Correct	17 ms	23788 KB	Output is correct
15	Correct	17 ms	23788 KB	Output is correct
16	Correct	16 ms	23788 KB	Output is correct
17	Correct	18 ms	23788 KB	Output is correct
18	Correct	16 ms	23788 KB	Output is correct
19	Correct	17 ms	23788 KB	Output is correct
20	Correct	16 ms	23808 KB	Output is correct
21	Correct	17 ms	24044 KB	Output is correct
22	Correct	17 ms	23872 KB	Output is correct
23	Correct	17 ms	23788 KB	Output is correct
24	Correct	17 ms	23788 KB	Output is correct
25	Correct	17 ms	23788 KB	Output is correct
26	Correct	17 ms	23788 KB	Output is correct
27	Correct	17 ms	23788 KB	Output is correct
28	Correct	17 ms	23788 KB	Output is correct
29	Correct	18 ms	23788 KB	Output is correct
30	Correct	17 ms	23788 KB	Output is correct
31	Correct	17 ms	23788 KB	Output is correct
32	Correct	17 ms	23788 KB	Output is correct
33	Correct	17 ms	23788 KB	Output is correct
34	Correct	17 ms	23788 KB	Output is correct
35	Correct	17 ms	23788 KB	Output is correct
36	Correct	17 ms	23788 KB	Output is correct
37	Correct	18 ms	23916 KB	Output is correct
38	Correct	17 ms	23916 KB	Output is correct
39	Correct	17 ms	23916 KB	Output is correct
40	Correct	17 ms	24044 KB	Output is correct

Subtask #3
49.0 / 49.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	17 ms	23788 KB	Output is correct
2	Correct	16 ms	23788 KB	Output is correct
3	Correct	17 ms	23788 KB	Output is correct
4	Correct	17 ms	23788 KB	Output is correct
5	Correct	17 ms	23788 KB	Output is correct
6	Correct	17 ms	23788 KB	Output is correct
7	Correct	17 ms	23808 KB	Output is correct
8	Correct	17 ms	23916 KB	Output is correct
9	Correct	17 ms	23808 KB	Output is correct
10	Correct	16 ms	23808 KB	Output is correct
11	Correct	17 ms	23788 KB	Output is correct
12	Correct	17 ms	23788 KB	Output is correct
13	Correct	17 ms	23788 KB	Output is correct
14	Correct	17 ms	23788 KB	Output is correct
15	Correct	17 ms	23788 KB	Output is correct
16	Correct	16 ms	23788 KB	Output is correct
17	Correct	18 ms	23788 KB	Output is correct
18	Correct	16 ms	23788 KB	Output is correct
19	Correct	17 ms	23788 KB	Output is correct
20	Correct	16 ms	23808 KB	Output is correct
21	Correct	17 ms	24044 KB	Output is correct
22	Correct	17 ms	23872 KB	Output is correct
23	Correct	17 ms	23788 KB	Output is correct
24	Correct	17 ms	23788 KB	Output is correct
25	Correct	17 ms	23788 KB	Output is correct
26	Correct	17 ms	23788 KB	Output is correct
27	Correct	17 ms	23788 KB	Output is correct
28	Correct	17 ms	23788 KB	Output is correct
29	Correct	18 ms	23788 KB	Output is correct
30	Correct	17 ms	23788 KB	Output is correct
31	Correct	17 ms	23788 KB	Output is correct
32	Correct	17 ms	23788 KB	Output is correct
33	Correct	17 ms	23788 KB	Output is correct
34	Correct	17 ms	23788 KB	Output is correct
35	Correct	17 ms	23788 KB	Output is correct
36	Correct	17 ms	23788 KB	Output is correct
37	Correct	18 ms	23916 KB	Output is correct
38	Correct	17 ms	23916 KB	Output is correct
39	Correct	17 ms	23916 KB	Output is correct
40	Correct	17 ms	24044 KB	Output is correct
41	Correct	62 ms	29032 KB	Output is correct
42	Correct	48 ms	25964 KB	Output is correct
43	Correct	51 ms	25964 KB	Output is correct
44	Correct	51 ms	26092 KB	Output is correct
45	Correct	48 ms	25964 KB	Output is correct
46	Correct	103 ms	28268 KB	Output is correct
47	Correct	101 ms	28268 KB	Output is correct
48	Correct	98 ms	28268 KB	Output is correct
49	Correct	98 ms	28268 KB	Output is correct
50	Correct	30 ms	24832 KB	Output is correct
51	Correct	31 ms	24812 KB	Output is correct
52	Correct	33 ms	24812 KB	Output is correct
53	Correct	43 ms	25708 KB	Output is correct
54	Correct	43 ms	25728 KB	Output is correct
55	Correct	52 ms	25708 KB	Output is correct
56	Correct	17 ms	23916 KB	Output is correct
57	Correct	22 ms	26732 KB	Output is correct
58	Correct	45 ms	37100 KB	Output is correct
59	Correct	99 ms	39276 KB	Output is correct
60	Correct	62 ms	29544 KB	Output is correct
61	Correct	77 ms	28908 KB	Output is correct

Submission #333869

Compilation message

Subtask #1 11.0 / 11.0

Subtask #2 40.0 / 40.0

Subtask #3 49.0 / 49.0

Subtask #1
11.0 / 11.0

Subtask #2
40.0 / 40.0

Subtask #3
49.0 / 49.0