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Submission #164046

# Submission time Handle Problem Language Result Execution time Memory
164046 2019-11-17T07:16:23 Z nvmdava Cat in a tree (BOI17_catinatree) C++17
100 / 100
 254 ms 18768 KB 
#include <bits/stdc++.h>
#pragma GCC optimize("unroll-loops")
using namespace std;
#define ll long long
#define ff first
#define ss second
#define pb push_back
mt19937_64 rng(chrono::steady_clock::now().time_since_epoch().count());
#define N 200005
#define INF 0x3f3f3f3f
#define MOD 1000000007LL

int d[N];
vector<int> adj[N];
vector<int> v;

void dfs(int v, int p){
	d[v] = d[p] + 1;
	for(int& x : adj[v]){
		if(x == p) continue;
		dfs(x, v);
	}
}

void dfs2(int v, int t){
	d[v] = -t;
	if(t == 1) return;
	t--;
	for(int& x : adj[v]){
		if(d[x] > -t){
			dfs2(x, t);
		}
	}
}

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

    int n, t;
    cin>>n>>t;
    for(int i = 1; i < n; i++){
    	int v, u;
    	cin>>u;
    	++u;
    	v = i + 1;
    	adj[v].push_back(u);
    	adj[u].push_back(v);
    	::v.push_back(i);
    }
    ::v.push_back(n);

    dfs(1, 0);
    sort(v.begin(), v.end(),[](const int& lhs, const int& rhs){
    	return d[lhs] > d[rhs];
    });
    int ans = 0;
	for(int& a : v){
		if(d[a] > 0){
			ans++;
			dfs2(a, t);
		}
	}
	cout<<ans;
}

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 4984 KB Output is correct
2 Correct 6 ms 5112 KB Output is correct
3 Correct 6 ms 4984 KB Output is correct
4 Correct 14 ms 5112 KB Output is correct
5 Correct 6 ms 4988 KB Output is correct
6 Correct 6 ms 5112 KB Output is correct
7 Correct 14 ms 4984 KB Output is correct
8 Correct 6 ms 4984 KB Output is correct
9 Correct 6 ms 4984 KB Output is correct
10 Correct 7 ms 4988 KB Output is correct
11 Correct 6 ms 5112 KB Output is correct
12 Correct 6 ms 5112 KB Output is correct
13 Correct 6 ms 4984 KB Output is correct
14 Correct 6 ms 4984 KB Output is correct
15 Correct 6 ms 5112 KB Output is correct
16 Correct 6 ms 4984 KB Output is correct
17 Correct 6 ms 4984 KB Output is correct
18 Correct 6 ms 4988 KB Output is correct
19 Correct 6 ms 5112 KB Output is correct
20 Correct 6 ms 4984 KB Output is correct

Subtask #2
40.0 / 40.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 4984 KB Output is correct
2 Correct 6 ms 5112 KB Output is correct
3 Correct 6 ms 4984 KB Output is correct
4 Correct 14 ms 5112 KB Output is correct
5 Correct 6 ms 4988 KB Output is correct
6 Correct 6 ms 5112 KB Output is correct
7 Correct 14 ms 4984 KB Output is correct
8 Correct 6 ms 4984 KB Output is correct
9 Correct 6 ms 4984 KB Output is correct
10 Correct 7 ms 4988 KB Output is correct
11 Correct 6 ms 5112 KB Output is correct
12 Correct 6 ms 5112 KB Output is correct
13 Correct 6 ms 4984 KB Output is correct
14 Correct 6 ms 4984 KB Output is correct
15 Correct 6 ms 5112 KB Output is correct
16 Correct 6 ms 4984 KB Output is correct
17 Correct 6 ms 4984 KB Output is correct
18 Correct 6 ms 4988 KB Output is correct
19 Correct 6 ms 5112 KB Output is correct
20 Correct 6 ms 4984 KB Output is correct
21 Correct 7 ms 5112 KB Output is correct
22 Correct 6 ms 5112 KB Output is correct
23 Correct 6 ms 4984 KB Output is correct
24 Correct 6 ms 5112 KB Output is correct
25 Correct 6 ms 5112 KB Output is correct
26 Correct 6 ms 5112 KB Output is correct
27 Correct 6 ms 5112 KB Output is correct
28 Correct 7 ms 5112 KB Output is correct
29 Correct 7 ms 5112 KB Output is correct
30 Correct 7 ms 5112 KB Output is correct
31 Correct 7 ms 5112 KB Output is correct
32 Correct 6 ms 5112 KB Output is correct
33 Correct 6 ms 5112 KB Output is correct
34 Correct 7 ms 5112 KB Output is correct
35 Correct 7 ms 5112 KB Output is correct
36 Correct 7 ms 5112 KB Output is correct
37 Correct 7 ms 5112 KB Output is correct
38 Correct 7 ms 5112 KB Output is correct
39 Correct 7 ms 5088 KB Output is correct
40 Correct 7 ms 5112 KB Output is correct

Subtask #3
49.0 / 49.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 4984 KB Output is correct
2 Correct 6 ms 5112 KB Output is correct
3 Correct 6 ms 4984 KB Output is correct
4 Correct 14 ms 5112 KB Output is correct
5 Correct 6 ms 4988 KB Output is correct
6 Correct 6 ms 5112 KB Output is correct
7 Correct 14 ms 4984 KB Output is correct
8 Correct 6 ms 4984 KB Output is correct
9 Correct 6 ms 4984 KB Output is correct
10 Correct 7 ms 4988 KB Output is correct
11 Correct 6 ms 5112 KB Output is correct
12 Correct 6 ms 5112 KB Output is correct
13 Correct 6 ms 4984 KB Output is correct
14 Correct 6 ms 4984 KB Output is correct
15 Correct 6 ms 5112 KB Output is correct
16 Correct 6 ms 4984 KB Output is correct
17 Correct 6 ms 4984 KB Output is correct
18 Correct 6 ms 4988 KB Output is correct
19 Correct 6 ms 5112 KB Output is correct
20 Correct 6 ms 4984 KB Output is correct
21 Correct 7 ms 5112 KB Output is correct
22 Correct 6 ms 5112 KB Output is correct
23 Correct 6 ms 4984 KB Output is correct
24 Correct 6 ms 5112 KB Output is correct
25 Correct 6 ms 5112 KB Output is correct
26 Correct 6 ms 5112 KB Output is correct
27 Correct 6 ms 5112 KB Output is correct
28 Correct 7 ms 5112 KB Output is correct
29 Correct 7 ms 5112 KB Output is correct
30 Correct 7 ms 5112 KB Output is correct
31 Correct 7 ms 5112 KB Output is correct
32 Correct 6 ms 5112 KB Output is correct
33 Correct 6 ms 5112 KB Output is correct
34 Correct 7 ms 5112 KB Output is correct
35 Correct 7 ms 5112 KB Output is correct
36 Correct 7 ms 5112 KB Output is correct
37 Correct 7 ms 5112 KB Output is correct
38 Correct 7 ms 5112 KB Output is correct
39 Correct 7 ms 5088 KB Output is correct
40 Correct 7 ms 5112 KB Output is correct
41 Correct 120 ms 13676 KB Output is correct
42 Correct 53 ms 9584 KB Output is correct
43 Correct 75 ms 9592 KB Output is correct
44 Correct 56 ms 9584 KB Output is correct
45 Correct 59 ms 9584 KB Output is correct
46 Correct 164 ms 14232 KB Output is correct
47 Correct 254 ms 14316 KB Output is correct
48 Correct 163 ms 14312 KB Output is correct
49 Correct 168 ms 14292 KB Output is correct
50 Correct 38 ms 9836 KB Output is correct
51 Correct 44 ms 9840 KB Output is correct
52 Correct 41 ms 9844 KB Output is correct
53 Correct 87 ms 14700 KB Output is correct
54 Correct 99 ms 14620 KB Output is correct
55 Correct 99 ms 14696 KB Output is correct
56 Correct 7 ms 5112 KB Output is correct
57 Correct 15 ms 6904 KB Output is correct
58 Correct 55 ms 13808 KB Output is correct
59 Correct 170 ms 18768 KB Output is correct
60 Correct 116 ms 13868 KB Output is correct
61 Correct 154 ms 13676 KB Output is correct