oj.uz

Submission #907726

# Submission time Handle Problem Language Result Execution time Memory
907726 2024-01-16T03:02:39 Z shoryu386 Cat in a tree (BOI17_catinatree) C++17
51 / 100
 1000 ms 22088 KB 
#include <bits/stdc++.h>
using namespace std;

#define int long long

vector<int> adj[200007];

int depth[200007];
bitset<200007> marked;
void dfs(int x, int p, int d){
	depth[x] = d;
	
	for (auto y : adj[x]){
		if (y == p) continue;
		dfs(y, x, d+1);
	}
}

int dfsMarked(int x, int p){
	int ans = INT_MAX;
	if (marked[x]) return 0;
	
	for (auto y : adj[x]){
		if (y == p) continue;
		ans = min(dfsMarked(y, x) + 1, ans);
	}
	return ans;
}

main(){
	int n, d; cin >> n >> d;
	int p[n];
	for (int x = 1; x < n; x++){
		cin >> p[x];
		
		adj[x].push_back(p[x]);
		adj[p[x]].push_back(x);
	}
	
	dfs(0, -1, 0);
	
	vector<int> depthOrder[200007];
	for (int x = 0; x < n; x++){
		depthOrder[depth[x]].push_back(x);
	}
	
	int ans = 0;
	for (int x = 200000; x > -1; x--){
		for (auto y : depthOrder[x]){
			//cout << y << ' ' << dfsMarked(y, -1) << '\n';
			
			if (dfsMarked(y, -1) >= d){
				marked[y] = 1;
				ans++;
			}
			
			//cout << y << ' ' << marked[y] << '\n';
		}
	}
	cout << ans;
}

Compilation message

catinatree.cpp:30:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   30 | main(){
      | ^~~~

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 11100 KB Output is correct
2 Correct 5 ms 11212 KB Output is correct
3 Correct 6 ms 11100 KB Output is correct
4 Correct 6 ms 11192 KB Output is correct
5 Correct 6 ms 11096 KB Output is correct
6 Correct 6 ms 11100 KB Output is correct
7 Correct 6 ms 11100 KB Output is correct
8 Correct 6 ms 11100 KB Output is correct
9 Correct 6 ms 11096 KB Output is correct
10 Correct 6 ms 11100 KB Output is correct
11 Correct 6 ms 11096 KB Output is correct
12 Correct 8 ms 11100 KB Output is correct
13 Correct 6 ms 11096 KB Output is correct
14 Correct 5 ms 11352 KB Output is correct
15 Correct 5 ms 11240 KB Output is correct
16 Correct 6 ms 11100 KB Output is correct
17 Correct 6 ms 11244 KB Output is correct
18 Correct 6 ms 11100 KB Output is correct
19 Correct 6 ms 11100 KB Output is correct
20 Correct 5 ms 11100 KB Output is correct

Subtask #2
40.0 / 40.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 11100 KB Output is correct
2 Correct 5 ms 11212 KB Output is correct
3 Correct 6 ms 11100 KB Output is correct
4 Correct 6 ms 11192 KB Output is correct
5 Correct 6 ms 11096 KB Output is correct
6 Correct 6 ms 11100 KB Output is correct
7 Correct 6 ms 11100 KB Output is correct
8 Correct 6 ms 11100 KB Output is correct
9 Correct 6 ms 11096 KB Output is correct
10 Correct 6 ms 11100 KB Output is correct
11 Correct 6 ms 11096 KB Output is correct
12 Correct 8 ms 11100 KB Output is correct
13 Correct 6 ms 11096 KB Output is correct
14 Correct 5 ms 11352 KB Output is correct
15 Correct 5 ms 11240 KB Output is correct
16 Correct 6 ms 11100 KB Output is correct
17 Correct 6 ms 11244 KB Output is correct
18 Correct 6 ms 11100 KB Output is correct
19 Correct 6 ms 11100 KB Output is correct
20 Correct 5 ms 11100 KB Output is correct
21 Correct 17 ms 11356 KB Output is correct
22 Correct 8 ms 11100 KB Output is correct
23 Correct 9 ms 11280 KB Output is correct
24 Correct 7 ms 11100 KB Output is correct
25 Correct 9 ms 11100 KB Output is correct
26 Correct 11 ms 11320 KB Output is correct
27 Correct 11 ms 11100 KB Output is correct
28 Correct 19 ms 11352 KB Output is correct
29 Correct 18 ms 11096 KB Output is correct
30 Correct 18 ms 11100 KB Output is correct
31 Correct 18 ms 11356 KB Output is correct
32 Correct 14 ms 11356 KB Output is correct
33 Correct 14 ms 11368 KB Output is correct
34 Correct 14 ms 11356 KB Output is correct
35 Correct 16 ms 11356 KB Output is correct
36 Correct 16 ms 11608 KB Output is correct
37 Correct 15 ms 11356 KB Output is correct
38 Correct 16 ms 11356 KB Output is correct
39 Correct 20 ms 11248 KB Output is correct
40 Correct 15 ms 11356 KB Output is correct

Subtask #3
0 / 49.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 11100 KB Output is correct
2 Correct 5 ms 11212 KB Output is correct
3 Correct 6 ms 11100 KB Output is correct
4 Correct 6 ms 11192 KB Output is correct
5 Correct 6 ms 11096 KB Output is correct
6 Correct 6 ms 11100 KB Output is correct
7 Correct 6 ms 11100 KB Output is correct
8 Correct 6 ms 11100 KB Output is correct
9 Correct 6 ms 11096 KB Output is correct
10 Correct 6 ms 11100 KB Output is correct
11 Correct 6 ms 11096 KB Output is correct
12 Correct 8 ms 11100 KB Output is correct
13 Correct 6 ms 11096 KB Output is correct
14 Correct 5 ms 11352 KB Output is correct
15 Correct 5 ms 11240 KB Output is correct
16 Correct 6 ms 11100 KB Output is correct
17 Correct 6 ms 11244 KB Output is correct
18 Correct 6 ms 11100 KB Output is correct
19 Correct 6 ms 11100 KB Output is correct
20 Correct 5 ms 11100 KB Output is correct
21 Correct 17 ms 11356 KB Output is correct
22 Correct 8 ms 11100 KB Output is correct
23 Correct 9 ms 11280 KB Output is correct
24 Correct 7 ms 11100 KB Output is correct
25 Correct 9 ms 11100 KB Output is correct
26 Correct 11 ms 11320 KB Output is correct
27 Correct 11 ms 11100 KB Output is correct
28 Correct 19 ms 11352 KB Output is correct
29 Correct 18 ms 11096 KB Output is correct
30 Correct 18 ms 11100 KB Output is correct
31 Correct 18 ms 11356 KB Output is correct
32 Correct 14 ms 11356 KB Output is correct
33 Correct 14 ms 11368 KB Output is correct
34 Correct 14 ms 11356 KB Output is correct
35 Correct 16 ms 11356 KB Output is correct
36 Correct 16 ms 11608 KB Output is correct
37 Correct 15 ms 11356 KB Output is correct
38 Correct 16 ms 11356 KB Output is correct
39 Correct 20 ms 11248 KB Output is correct
40 Correct 15 ms 11356 KB Output is correct
41 Execution timed out 1008 ms 22088 KB Time limit exceeded
42 Halted 0 ms 0 KB -