oj.uz

Submission #921338

# Submission time Handle Problem Language Result Execution time Memory
921338 2024-02-03T17:50:54 Z penguin133 Cat in a tree (BOI17_catinatree) C++17
100 / 100
 72 ms 27700 KB 
#include <bits/stdc++.h>
using namespace std;

#define int long long
#define pi pair<int, int>
#define pii pair<int, pi>
#define fi first
#define se second
#ifdef _WIN32
#define getchar_unlocked _getchar_nolock
#endif
mt19937_64 rng(chrono::steady_clock::now().time_since_epoch().count());

int n, d;
vector <int> adj[200005];
pi mem[200005];

pi dp(int x, int par){
	vector <int> tmp;
	int cur = 0;
	for(auto i : adj[x]){
		if(i == par)continue;
		pi lmao = dp(i, x);
		tmp.push_back(lmao.se);
		cur += lmao.fi;
	}
	int in = 0;
	sort(tmp.begin(), tmp.end());
	while((int)tmp.size() > in + 1 && tmp[in] + tmp[in + 1] + 2 < d)in++, cur--;
	int left = (in < (int)tmp.size() ? tmp[in] + 1 : d);
	if(left >= d)left -= d, cur++;
	//cout << x << ' ' << cur << ' ' << left << '\n';
	return mem[x] = {cur, left};
}

void solve(){
	cin >> n >> d;
	for(int i = 1; i < n; i++){
		int a; cin >> a; a++;
		adj[a].push_back(i + 1);
		adj[i + 1].push_back(a);
	}
	cout << dp(1, -1).fi << '\n';
}

main(){
	ios::sync_with_stdio(0);cin.tie(0);
	int tc = 1;
	//cin >> tc;
	for(int tc1=1;tc1<=tc;tc1++){
		// cout << "Case #" << tc1 << ": ";
		solve();
	}
}

Compilation message

catinatree.cpp:46:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   46 | main(){
      | ^~~~

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 5980 KB Output is correct
2 Correct 2 ms 5980 KB Output is correct
3 Correct 2 ms 6060 KB Output is correct
4 Correct 2 ms 5980 KB Output is correct
5 Correct 2 ms 5980 KB Output is correct
6 Correct 2 ms 6064 KB Output is correct
7 Correct 3 ms 5980 KB Output is correct
8 Correct 2 ms 5980 KB Output is correct
9 Correct 2 ms 5980 KB Output is correct
10 Correct 2 ms 5980 KB Output is correct
11 Correct 2 ms 6056 KB Output is correct
12 Correct 2 ms 5980 KB Output is correct
13 Correct 2 ms 5980 KB Output is correct
14 Correct 2 ms 5976 KB Output is correct
15 Correct 2 ms 5980 KB Output is correct
16 Correct 2 ms 5980 KB Output is correct
17 Correct 2 ms 5980 KB Output is correct
18 Correct 2 ms 5980 KB Output is correct
19 Correct 2 ms 5980 KB Output is correct
20 Correct 2 ms 5980 KB Output is correct

Subtask #2
40.0 / 40.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 5980 KB Output is correct
2 Correct 2 ms 5980 KB Output is correct
3 Correct 2 ms 6060 KB Output is correct
4 Correct 2 ms 5980 KB Output is correct
5 Correct 2 ms 5980 KB Output is correct
6 Correct 2 ms 6064 KB Output is correct
7 Correct 3 ms 5980 KB Output is correct
8 Correct 2 ms 5980 KB Output is correct
9 Correct 2 ms 5980 KB Output is correct
10 Correct 2 ms 5980 KB Output is correct
11 Correct 2 ms 6056 KB Output is correct
12 Correct 2 ms 5980 KB Output is correct
13 Correct 2 ms 5980 KB Output is correct
14 Correct 2 ms 5976 KB Output is correct
15 Correct 2 ms 5980 KB Output is correct
16 Correct 2 ms 5980 KB Output is correct
17 Correct 2 ms 5980 KB Output is correct
18 Correct 2 ms 5980 KB Output is correct
19 Correct 2 ms 5980 KB Output is correct
20 Correct 2 ms 5980 KB Output is correct
21 Correct 2 ms 6236 KB Output is correct
22 Correct 2 ms 5980 KB Output is correct
23 Correct 2 ms 5976 KB Output is correct
24 Correct 2 ms 5980 KB Output is correct
25 Correct 2 ms 5980 KB Output is correct
26 Correct 2 ms 5980 KB Output is correct
27 Correct 2 ms 5980 KB Output is correct
28 Correct 2 ms 5980 KB Output is correct
29 Correct 2 ms 5980 KB Output is correct
30 Correct 2 ms 5980 KB Output is correct
31 Correct 2 ms 5980 KB Output is correct
32 Correct 2 ms 5980 KB Output is correct
33 Correct 3 ms 5980 KB Output is correct
34 Correct 2 ms 5980 KB Output is correct
35 Correct 2 ms 5980 KB Output is correct
36 Correct 3 ms 5980 KB Output is correct
37 Correct 2 ms 5980 KB Output is correct
38 Correct 2 ms 5980 KB Output is correct
39 Correct 3 ms 5980 KB Output is correct
40 Correct 2 ms 6236 KB Output is correct

Subtask #3
49.0 / 49.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 5980 KB Output is correct
2 Correct 2 ms 5980 KB Output is correct
3 Correct 2 ms 6060 KB Output is correct
4 Correct 2 ms 5980 KB Output is correct
5 Correct 2 ms 5980 KB Output is correct
6 Correct 2 ms 6064 KB Output is correct
7 Correct 3 ms 5980 KB Output is correct
8 Correct 2 ms 5980 KB Output is correct
9 Correct 2 ms 5980 KB Output is correct
10 Correct 2 ms 5980 KB Output is correct
11 Correct 2 ms 6056 KB Output is correct
12 Correct 2 ms 5980 KB Output is correct
13 Correct 2 ms 5980 KB Output is correct
14 Correct 2 ms 5976 KB Output is correct
15 Correct 2 ms 5980 KB Output is correct
16 Correct 2 ms 5980 KB Output is correct
17 Correct 2 ms 5980 KB Output is correct
18 Correct 2 ms 5980 KB Output is correct
19 Correct 2 ms 5980 KB Output is correct
20 Correct 2 ms 5980 KB Output is correct
21 Correct 2 ms 6236 KB Output is correct
22 Correct 2 ms 5980 KB Output is correct
23 Correct 2 ms 5976 KB Output is correct
24 Correct 2 ms 5980 KB Output is correct
25 Correct 2 ms 5980 KB Output is correct
26 Correct 2 ms 5980 KB Output is correct
27 Correct 2 ms 5980 KB Output is correct
28 Correct 2 ms 5980 KB Output is correct
29 Correct 2 ms 5980 KB Output is correct
30 Correct 2 ms 5980 KB Output is correct
31 Correct 2 ms 5980 KB Output is correct
32 Correct 2 ms 5980 KB Output is correct
33 Correct 3 ms 5980 KB Output is correct
34 Correct 2 ms 5980 KB Output is correct
35 Correct 2 ms 5980 KB Output is correct
36 Correct 3 ms 5980 KB Output is correct
37 Correct 2 ms 5980 KB Output is correct
38 Correct 2 ms 5980 KB Output is correct
39 Correct 3 ms 5980 KB Output is correct
40 Correct 2 ms 6236 KB Output is correct
41 Correct 35 ms 16588 KB Output is correct
42 Correct 23 ms 12380 KB Output is correct
43 Correct 26 ms 12488 KB Output is correct
44 Correct 23 ms 12560 KB Output is correct
45 Correct 22 ms 12380 KB Output is correct
46 Correct 60 ms 16732 KB Output is correct
47 Correct 57 ms 16716 KB Output is correct
48 Correct 60 ms 16724 KB Output is correct
49 Correct 63 ms 16724 KB Output is correct
50 Correct 16 ms 12632 KB Output is correct
51 Correct 15 ms 12748 KB Output is correct
52 Correct 16 ms 12672 KB Output is correct
53 Correct 41 ms 17244 KB Output is correct
54 Correct 40 ms 17244 KB Output is correct
55 Correct 37 ms 17244 KB Output is correct
56 Correct 3 ms 6236 KB Output is correct
57 Correct 8 ms 11140 KB Output is correct
58 Correct 26 ms 21852 KB Output is correct
59 Correct 72 ms 27700 KB Output is correct
60 Correct 42 ms 16664 KB Output is correct
61 Correct 43 ms 15964 KB Output is correct