oj.uz

Submission #162675

# Submission time Handle Problem Language Result Execution time Memory
162675 2019-11-09T08:21:29 Z ruler Cat in a tree (BOI17_catinatree) C++14
100 / 100
 91 ms 15736 KB 
// IOI 2021
 
#include <bits/stdc++.h>
using namespace std;

#define sync ios::sync_with_stdio(0), cin.tie(0), cout.tie(0)
#define endl "\n"
#define ends ' '
#define die(x) return cout << x << endl, 0
#define all(v) v.begin(), v.end()
#define sz(x) (int)(x.size())
#define debug(x) cerr << #x << ": " << x << endl
#define debugP(p) cerr << #p << ": {" << p.first << ", " << p.second << '}' << endl
typedef long long ll;
typedef pair<int, int> pii;
typedef pair<ll, ll> pll;
const ll INF = 1e9, MOD = INF + 7;
 
/////////////////////////////////////////////////////////////////////
 
const int N = 2e5 + 5;

int n, d, DP[N], DIS[N];
vector<int> G[N];

void DFS(int v) {
	if (sz(G[v]) == 0) { DP[v] = 1, DIS[v] = 0; return; }
	DFS(G[v][0]);
	DP[v] = DP[G[v][0]], DIS[v] = DIS[G[v][0]] + 1;
	if (DIS[v] == d) DP[v]++, DIS[v] = 0;
	for (int i = 1; i < sz(G[v]); i++) {
		int u = G[v][i];
		DFS(u);
		if (DIS[v] + DIS[u] + 1 >= d) DP[v] += DP[u], DIS[v] = min(DIS[v], DIS[u] + 1);
		else DP[v] += DP[u] - 1, DIS[v] = max(DIS[v], DIS[u] + 1);
	}
}

int main() {
 
	sync;
	
	cin >> n >> d;
	for (int i = 1; i < n; i++) {
		int p; cin >> p;
		G[p].push_back(i);
	}
	DFS(0);
	cout << DP[0] << endl;


	return 0;
}

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 5112 KB Output is correct
2 Correct 7 ms 4984 KB Output is correct
3 Correct 7 ms 4984 KB Output is correct
4 Correct 6 ms 4988 KB Output is correct
5 Correct 6 ms 5112 KB Output is correct
6 Correct 6 ms 5052 KB Output is correct
7 Correct 5 ms 4984 KB Output is correct
8 Correct 6 ms 5112 KB Output is correct
9 Correct 7 ms 4984 KB Output is correct
10 Correct 13 ms 5084 KB Output is correct
11 Correct 6 ms 4984 KB Output is correct
12 Correct 7 ms 5116 KB Output is correct
13 Correct 6 ms 5112 KB Output is correct
14 Correct 6 ms 4988 KB Output is correct
15 Correct 7 ms 5240 KB Output is correct
16 Correct 7 ms 5112 KB Output is correct
17 Correct 7 ms 4984 KB Output is correct
18 Correct 7 ms 4984 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 5112 KB Output is correct
2 Correct 7 ms 4984 KB Output is correct
3 Correct 7 ms 4984 KB Output is correct
4 Correct 6 ms 4988 KB Output is correct
5 Correct 6 ms 5112 KB Output is correct
6 Correct 6 ms 5052 KB Output is correct
7 Correct 5 ms 4984 KB Output is correct
8 Correct 6 ms 5112 KB Output is correct
9 Correct 7 ms 4984 KB Output is correct
10 Correct 13 ms 5084 KB Output is correct
11 Correct 6 ms 4984 KB Output is correct
12 Correct 7 ms 5116 KB Output is correct
13 Correct 6 ms 5112 KB Output is correct
14 Correct 6 ms 4988 KB Output is correct
15 Correct 7 ms 5240 KB Output is correct
16 Correct 7 ms 5112 KB Output is correct
17 Correct 7 ms 4984 KB Output is correct
18 Correct 7 ms 4984 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 5240 KB Output is correct
22 Correct 7 ms 4984 KB Output is correct
23 Correct 6 ms 5112 KB Output is correct
24 Correct 7 ms 5112 KB Output is correct
25 Correct 7 ms 5112 KB Output is correct
26 Correct 6 ms 4984 KB Output is correct
27 Correct 6 ms 5112 KB Output is correct
28 Correct 7 ms 5112 KB Output is correct
29 Correct 6 ms 5112 KB Output is correct
30 Correct 7 ms 5112 KB Output is correct
31 Correct 7 ms 5084 KB Output is correct
32 Correct 7 ms 5112 KB Output is correct
33 Correct 6 ms 5076 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 6 ms 5112 KB Output is correct
39 Correct 7 ms 5112 KB Output is correct
40 Correct 6 ms 5240 KB Output is correct

Subtask #3
49.0 / 49.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 5112 KB Output is correct
2 Correct 7 ms 4984 KB Output is correct
3 Correct 7 ms 4984 KB Output is correct
4 Correct 6 ms 4988 KB Output is correct
5 Correct 6 ms 5112 KB Output is correct
6 Correct 6 ms 5052 KB Output is correct
7 Correct 5 ms 4984 KB Output is correct
8 Correct 6 ms 5112 KB Output is correct
9 Correct 7 ms 4984 KB Output is correct
10 Correct 13 ms 5084 KB Output is correct
11 Correct 6 ms 4984 KB Output is correct
12 Correct 7 ms 5116 KB Output is correct
13 Correct 6 ms 5112 KB Output is correct
14 Correct 6 ms 4988 KB Output is correct
15 Correct 7 ms 5240 KB Output is correct
16 Correct 7 ms 5112 KB Output is correct
17 Correct 7 ms 4984 KB Output is correct
18 Correct 7 ms 4984 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 5240 KB Output is correct
22 Correct 7 ms 4984 KB Output is correct
23 Correct 6 ms 5112 KB Output is correct
24 Correct 7 ms 5112 KB Output is correct
25 Correct 7 ms 5112 KB Output is correct
26 Correct 6 ms 4984 KB Output is correct
27 Correct 6 ms 5112 KB Output is correct
28 Correct 7 ms 5112 KB Output is correct
29 Correct 6 ms 5112 KB Output is correct
30 Correct 7 ms 5112 KB Output is correct
31 Correct 7 ms 5084 KB Output is correct
32 Correct 7 ms 5112 KB Output is correct
33 Correct 6 ms 5076 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 6 ms 5112 KB Output is correct
39 Correct 7 ms 5112 KB Output is correct
40 Correct 6 ms 5240 KB Output is correct
41 Correct 52 ms 11324 KB Output is correct
42 Correct 38 ms 8056 KB Output is correct
43 Correct 40 ms 8080 KB Output is correct
44 Correct 36 ms 7932 KB Output is correct
45 Correct 37 ms 7928 KB Output is correct
46 Correct 89 ms 11084 KB Output is correct
47 Correct 85 ms 11000 KB Output is correct
48 Correct 91 ms 11000 KB Output is correct
49 Correct 80 ms 11100 KB Output is correct
50 Correct 20 ms 6776 KB Output is correct
51 Correct 22 ms 6904 KB Output is correct
52 Correct 21 ms 6776 KB Output is correct
53 Correct 34 ms 8440 KB Output is correct
54 Correct 34 ms 8440 KB Output is correct
55 Correct 35 ms 8440 KB Output is correct
56 Correct 7 ms 5112 KB Output is correct
57 Correct 12 ms 6904 KB Output is correct
58 Correct 32 ms 13432 KB Output is correct
59 Correct 74 ms 15736 KB Output is correct
60 Correct 55 ms 12020 KB Output is correct
61 Correct 65 ms 11640 KB Output is correct