Submission #562732

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
562732	2022-05-15T06:36:13 Z	anubhavdhar	Cat in a tree (BOI17_catinatree)	C++14	100 / 100	140 ms	15540 KB

catinatree

#include<bits/stdc++.h>

#define ll long long
#define pb push_back
#define mp make_pair
#define pii pair<int, int>
#define pll pair<ll, ll>
#define ff first 
#define ss second
#define vi vector<int>
#define vl vector<ll>
#define vii vector<pii>
#define vll vector<pll>
#define FOR(i,N) for(i=0;i<(N);++i)
#define FORe(i,N) for(i=1;i<=(N);++i)
#define FORr(i,a,b) for(i=(a);i<(b);++i)
#define FORrev(i,N) for(i=(N);i>=0;--i)
#define F0R(i,N) for(int i=0;i<(N);++i)
#define F0Re(i,N) for(int i=1;i<=(N);++i)
#define F0Rr(i,a,b) for(ll i=(a);i<(b);++i)
#define F0Rrev(i,N) for(int i=(N);i>=0;--i)
#define all(v) (v).begin(),(v).end()
#define dbgLine cerr<<" LINE : "<<__LINE__<<"\n"
#define ldd long double
 
using namespace std;
 
const int Alp = 26;
const int __PRECISION = 9;
const int inf = 1e9 + 8;
 
const ldd PI = acos(-1);
const ldd EPS = 1e-7;

const ll MOD = 1e9 + 7;
const ll MAXN = 2e5 + 5;
const ll ROOTN = 640;
const ll LOGN = 18;
const ll INF = 1e18 + 1022;

int N, D;
vector<int> dep(MAXN), dis(MAXN), g[MAXN];

void dfs(int a, int p = -1, int d = D){
	if(dis[a] >= d){
		return;
	}
	dis[a] = d;
	for(int b : g[a]){
		if(p != b){
			dfs(b, a, d - 1);
		}
	}
}

signed main()
{

	
	ios_base::sync_with_stdio(false);
	cin.tie(NULL);
	cout.tie(NULL);
	

	cin>>N>>D;


	F0Re(i, N-1)
	{
		int j;
		cin>>j;
		g[i + 1].pb(j + 1);
		g[j + 1].pb(i + 1);
		dep[i + 1] = dep[j + 1] + 1;
	}

	if(D >= N)
	{
		cout<<"1\n";
		exit(0);
	}
	if(D == 1)
	{
		cout<<N<<'\n';
		exit(0);
	}
	// dbgLine;
	vi V(N);
	iota(all(V), 1);
	sort(all(V), [&](int a, int b){return dep[a] > dep[b];});
	int ans = 0;
	for(int u : V){
		if(dis[u]){
			continue;
		}
		++ans;
		dfs(u);
	}

	cout << ans << '\n';
 
	return 0;
}

Subtask #1
11.0 / 11.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	3 ms	6484 KB	Output is correct
2	Correct	4 ms	6484 KB	Output is correct
3	Correct	3 ms	6484 KB	Output is correct
4	Correct	3 ms	6484 KB	Output is correct
5	Correct	3 ms	6484 KB	Output is correct
6	Correct	5 ms	6484 KB	Output is correct
7	Correct	4 ms	6484 KB	Output is correct
8	Correct	5 ms	6552 KB	Output is correct
9	Correct	3 ms	6484 KB	Output is correct
10	Correct	4 ms	6484 KB	Output is correct
11	Correct	4 ms	6484 KB	Output is correct
12	Correct	3 ms	6604 KB	Output is correct
13	Correct	3 ms	6484 KB	Output is correct
14	Correct	3 ms	6600 KB	Output is correct
15	Correct	3 ms	6560 KB	Output is correct
16	Correct	3 ms	6484 KB	Output is correct
17	Correct	3 ms	6484 KB	Output is correct
18	Correct	3 ms	6484 KB	Output is correct
19	Correct	3 ms	6484 KB	Output is correct
20	Correct	3 ms	6484 KB	Output is correct

Subtask #2
40.0 / 40.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	3 ms	6484 KB	Output is correct
2	Correct	4 ms	6484 KB	Output is correct
3	Correct	3 ms	6484 KB	Output is correct
4	Correct	3 ms	6484 KB	Output is correct
5	Correct	3 ms	6484 KB	Output is correct
6	Correct	5 ms	6484 KB	Output is correct
7	Correct	4 ms	6484 KB	Output is correct
8	Correct	5 ms	6552 KB	Output is correct
9	Correct	3 ms	6484 KB	Output is correct
10	Correct	4 ms	6484 KB	Output is correct
11	Correct	4 ms	6484 KB	Output is correct
12	Correct	3 ms	6604 KB	Output is correct
13	Correct	3 ms	6484 KB	Output is correct
14	Correct	3 ms	6600 KB	Output is correct
15	Correct	3 ms	6560 KB	Output is correct
16	Correct	3 ms	6484 KB	Output is correct
17	Correct	3 ms	6484 KB	Output is correct
18	Correct	3 ms	6484 KB	Output is correct
19	Correct	3 ms	6484 KB	Output is correct
20	Correct	3 ms	6484 KB	Output is correct
21	Correct	4 ms	6612 KB	Output is correct
22	Correct	4 ms	6612 KB	Output is correct
23	Correct	4 ms	6612 KB	Output is correct
24	Correct	4 ms	6612 KB	Output is correct
25	Correct	4 ms	6612 KB	Output is correct
26	Correct	3 ms	6612 KB	Output is correct
27	Correct	4 ms	6612 KB	Output is correct
28	Correct	4 ms	6660 KB	Output is correct
29	Correct	4 ms	6612 KB	Output is correct
30	Correct	4 ms	6612 KB	Output is correct
31	Correct	4 ms	6608 KB	Output is correct
32	Correct	4 ms	6612 KB	Output is correct
33	Correct	5 ms	6604 KB	Output is correct
34	Correct	4 ms	6596 KB	Output is correct
35	Correct	4 ms	6600 KB	Output is correct
36	Correct	4 ms	6612 KB	Output is correct
37	Correct	4 ms	6612 KB	Output is correct
38	Correct	4 ms	6612 KB	Output is correct
39	Correct	4 ms	6612 KB	Output is correct
40	Correct	4 ms	6612 KB	Output is correct

Subtask #3
49.0 / 49.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	3 ms	6484 KB	Output is correct
2	Correct	4 ms	6484 KB	Output is correct
3	Correct	3 ms	6484 KB	Output is correct
4	Correct	3 ms	6484 KB	Output is correct
5	Correct	3 ms	6484 KB	Output is correct
6	Correct	5 ms	6484 KB	Output is correct
7	Correct	4 ms	6484 KB	Output is correct
8	Correct	5 ms	6552 KB	Output is correct
9	Correct	3 ms	6484 KB	Output is correct
10	Correct	4 ms	6484 KB	Output is correct
11	Correct	4 ms	6484 KB	Output is correct
12	Correct	3 ms	6604 KB	Output is correct
13	Correct	3 ms	6484 KB	Output is correct
14	Correct	3 ms	6600 KB	Output is correct
15	Correct	3 ms	6560 KB	Output is correct
16	Correct	3 ms	6484 KB	Output is correct
17	Correct	3 ms	6484 KB	Output is correct
18	Correct	3 ms	6484 KB	Output is correct
19	Correct	3 ms	6484 KB	Output is correct
20	Correct	3 ms	6484 KB	Output is correct
21	Correct	4 ms	6612 KB	Output is correct
22	Correct	4 ms	6612 KB	Output is correct
23	Correct	4 ms	6612 KB	Output is correct
24	Correct	4 ms	6612 KB	Output is correct
25	Correct	4 ms	6612 KB	Output is correct
26	Correct	3 ms	6612 KB	Output is correct
27	Correct	4 ms	6612 KB	Output is correct
28	Correct	4 ms	6660 KB	Output is correct
29	Correct	4 ms	6612 KB	Output is correct
30	Correct	4 ms	6612 KB	Output is correct
31	Correct	4 ms	6608 KB	Output is correct
32	Correct	4 ms	6612 KB	Output is correct
33	Correct	5 ms	6604 KB	Output is correct
34	Correct	4 ms	6596 KB	Output is correct
35	Correct	4 ms	6600 KB	Output is correct
36	Correct	4 ms	6612 KB	Output is correct
37	Correct	4 ms	6612 KB	Output is correct
38	Correct	4 ms	6612 KB	Output is correct
39	Correct	4 ms	6612 KB	Output is correct
40	Correct	4 ms	6612 KB	Output is correct
41	Correct	68 ms	14444 KB	Output is correct
42	Correct	26 ms	10340 KB	Output is correct
43	Correct	39 ms	10708 KB	Output is correct
44	Correct	33 ms	10768 KB	Output is correct
45	Correct	42 ms	10716 KB	Output is correct
46	Correct	88 ms	15084 KB	Output is correct
47	Correct	140 ms	15000 KB	Output is correct
48	Correct	81 ms	15108 KB	Output is correct
49	Correct	86 ms	14996 KB	Output is correct
50	Correct	25 ms	11092 KB	Output is correct
51	Correct	24 ms	10932 KB	Output is correct
52	Correct	23 ms	11020 KB	Output is correct
53	Correct	44 ms	15412 KB	Output is correct
54	Correct	51 ms	15436 KB	Output is correct
55	Correct	49 ms	15540 KB	Output is correct
56	Correct	4 ms	6612 KB	Output is correct
57	Correct	8 ms	7508 KB	Output is correct
58	Correct	27 ms	11084 KB	Output is correct
59	Correct	77 ms	15308 KB	Output is correct
60	Correct	76 ms	14624 KB	Output is correct
61	Correct	86 ms	14452 KB	Output is correct

Submission #562732

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