Submission #1114234

# Submission time Handle Problem Language Result Execution time Memory
1114234 2024-11-18T12:01:07 Z Dan4Life Mergers (JOI19_mergers) C++17
34 / 100
3000 ms 54600 KB
#include <bits/stdc++.h>
using namespace std;
#define pb push_back
#define sz(a) (int)a.size()
#define all(a) begin(a),end(a)

using ar2 = array<int,2>;
const int N = (int)5e5+10;
const int LINF = (int)1e18;
int n, k;
vector<int> adj[N];
int p[N], sz[N];
int a[N], tot[N], cnt[N], deg[N];
vector<int> v[N];

int findSet(int i){return i==p[i]?i:p[i]=findSet(p[i]);}
void unionSet(int i, int j){
	int x = findSet(i), y = findSet(j);
	if(x==y) return;
	if(sz[x]<sz[y])swap(x,y);
	p[y] = x, sz[x]+=sz[y];
}

void dfs(int s, int p){
	v[s].pb(a[s]);
	for(auto u : adj[s]){
		if(u==p) continue;
		dfs(u,s);
		if(sz(v[s]) < sz(v[u])) v[s].swap(v[u]);
		for(auto w : v[u]) v[s].pb(w);
	}
	int ok = 1; 
	unordered_map<int,int> cnt; cnt.clear();
	for(auto u : v[s]) cnt[u]++;
	for(auto u : v[s]) ok&=(cnt[u]==tot[u]);
	//for(auto u : v[s]) cnt[u]--;
	if(p and !ok) unionSet(s,p);
}

int32_t main(){
	ios_base::sync_with_stdio(false); cin.tie(0);
	cin >> n >> k;
	for(int i = 1; i <= n; i++) p[i]=i,sz[i]=1;
	for(int i = 1; i < n; i++){
		int a, b; cin >> a >> b;
		adj[a].pb(b); adj[b].pb(a);
	}
	for(int i = 1; i <= n; i++)
		cin >> a[i], tot[a[i]]++;
	dfs(1,0);
	for(int i = 1; i <= n; i++){
		int x = findSet(i);
		for(int j : adj[i])
			deg[x]+=(x!=findSet(j));
	}
	int cnt = 1;
	for(int i = 1; i <= n; i++) cnt+=(deg[i]==1);
	cout << cnt/2 << "\n";
}
# Verdict Execution time Memory Grader output
1 Correct 6 ms 33616 KB Output is correct
2 Correct 6 ms 33616 KB Output is correct
3 Correct 6 ms 33788 KB Output is correct
4 Correct 6 ms 33616 KB Output is correct
5 Correct 6 ms 33616 KB Output is correct
6 Correct 6 ms 33616 KB Output is correct
7 Correct 5 ms 33616 KB Output is correct
8 Correct 6 ms 33616 KB Output is correct
9 Correct 6 ms 33616 KB Output is correct
10 Correct 5 ms 27472 KB Output is correct
11 Correct 5 ms 27472 KB Output is correct
12 Correct 5 ms 25424 KB Output is correct
13 Correct 5 ms 31568 KB Output is correct
14 Correct 6 ms 33616 KB Output is correct
15 Correct 6 ms 33616 KB Output is correct
16 Correct 6 ms 33616 KB Output is correct
17 Correct 6 ms 33616 KB Output is correct
18 Correct 6 ms 33616 KB Output is correct
19 Correct 7 ms 33616 KB Output is correct
20 Correct 6 ms 33616 KB Output is correct
21 Correct 5 ms 33616 KB Output is correct
22 Correct 5 ms 33616 KB Output is correct
23 Correct 6 ms 33616 KB Output is correct
24 Correct 6 ms 33616 KB Output is correct
# Verdict Execution time Memory Grader output
1 Correct 6 ms 33616 KB Output is correct
2 Correct 6 ms 33616 KB Output is correct
3 Correct 6 ms 33788 KB Output is correct
4 Correct 6 ms 33616 KB Output is correct
5 Correct 6 ms 33616 KB Output is correct
6 Correct 6 ms 33616 KB Output is correct
7 Correct 5 ms 33616 KB Output is correct
8 Correct 6 ms 33616 KB Output is correct
9 Correct 6 ms 33616 KB Output is correct
10 Correct 5 ms 27472 KB Output is correct
11 Correct 5 ms 27472 KB Output is correct
12 Correct 5 ms 25424 KB Output is correct
13 Correct 5 ms 31568 KB Output is correct
14 Correct 6 ms 33616 KB Output is correct
15 Correct 6 ms 33616 KB Output is correct
16 Correct 6 ms 33616 KB Output is correct
17 Correct 6 ms 33616 KB Output is correct
18 Correct 6 ms 33616 KB Output is correct
19 Correct 7 ms 33616 KB Output is correct
20 Correct 6 ms 33616 KB Output is correct
21 Correct 5 ms 33616 KB Output is correct
22 Correct 5 ms 33616 KB Output is correct
23 Correct 6 ms 33616 KB Output is correct
24 Correct 6 ms 33616 KB Output is correct
25 Correct 8 ms 33616 KB Output is correct
26 Correct 11 ms 33884 KB Output is correct
27 Correct 11 ms 33872 KB Output is correct
28 Correct 136 ms 34112 KB Output is correct
29 Correct 13 ms 33872 KB Output is correct
30 Correct 12 ms 33872 KB Output is correct
31 Correct 6 ms 33616 KB Output is correct
32 Correct 168 ms 34188 KB Output is correct
33 Correct 6 ms 33616 KB Output is correct
34 Correct 7 ms 33760 KB Output is correct
35 Correct 10 ms 33856 KB Output is correct
36 Correct 10 ms 33888 KB Output is correct
37 Correct 11 ms 33872 KB Output is correct
38 Correct 6 ms 33476 KB Output is correct
39 Correct 10 ms 33872 KB Output is correct
40 Correct 8 ms 29776 KB Output is correct
41 Correct 9 ms 33872 KB Output is correct
42 Correct 6 ms 29776 KB Output is correct
43 Correct 44 ms 34128 KB Output is correct
44 Correct 6 ms 33788 KB Output is correct
45 Correct 69 ms 33872 KB Output is correct
46 Correct 15 ms 33872 KB Output is correct
47 Correct 6 ms 33784 KB Output is correct
48 Correct 10 ms 33872 KB Output is correct
49 Correct 8 ms 33872 KB Output is correct
50 Correct 82 ms 33972 KB Output is correct
51 Correct 10 ms 33996 KB Output is correct
52 Correct 6 ms 33872 KB Output is correct
53 Correct 7 ms 33872 KB Output is correct
54 Correct 9 ms 33872 KB Output is correct
# Verdict Execution time Memory Grader output
1 Correct 6 ms 33616 KB Output is correct
2 Correct 6 ms 33616 KB Output is correct
3 Correct 6 ms 33788 KB Output is correct
4 Correct 6 ms 33616 KB Output is correct
5 Correct 6 ms 33616 KB Output is correct
6 Correct 6 ms 33616 KB Output is correct
7 Correct 5 ms 33616 KB Output is correct
8 Correct 6 ms 33616 KB Output is correct
9 Correct 6 ms 33616 KB Output is correct
10 Correct 5 ms 27472 KB Output is correct
11 Correct 5 ms 27472 KB Output is correct
12 Correct 5 ms 25424 KB Output is correct
13 Correct 5 ms 31568 KB Output is correct
14 Correct 6 ms 33616 KB Output is correct
15 Correct 6 ms 33616 KB Output is correct
16 Correct 6 ms 33616 KB Output is correct
17 Correct 6 ms 33616 KB Output is correct
18 Correct 6 ms 33616 KB Output is correct
19 Correct 7 ms 33616 KB Output is correct
20 Correct 6 ms 33616 KB Output is correct
21 Correct 5 ms 33616 KB Output is correct
22 Correct 5 ms 33616 KB Output is correct
23 Correct 6 ms 33616 KB Output is correct
24 Correct 6 ms 33616 KB Output is correct
25 Correct 6 ms 33616 KB Output is correct
26 Correct 53 ms 40544 KB Output is correct
27 Correct 97 ms 41964 KB Output is correct
28 Correct 12 ms 33908 KB Output is correct
29 Correct 6 ms 33616 KB Output is correct
30 Correct 6 ms 33616 KB Output is correct
31 Correct 146 ms 42080 KB Output is correct
32 Correct 8 ms 33784 KB Output is correct
33 Execution timed out 3066 ms 54600 KB Time limit exceeded
34 Halted 0 ms 0 KB -
# Verdict Execution time Memory Grader output
1 Correct 64 ms 40644 KB Output is correct
2 Correct 69 ms 45200 KB Output is correct
3 Correct 10 ms 33872 KB Output is correct
4 Correct 10 ms 33872 KB Output is correct
5 Correct 5 ms 33616 KB Output is correct
6 Correct 6 ms 33616 KB Output is correct
7 Correct 7 ms 33616 KB Output is correct
8 Correct 621 ms 44500 KB Output is correct
9 Correct 8 ms 33872 KB Output is correct
10 Correct 142 ms 41920 KB Output is correct
11 Correct 5 ms 33616 KB Output is correct
12 Correct 466 ms 41996 KB Output is correct
13 Correct 336 ms 44984 KB Output is correct
14 Correct 259 ms 48052 KB Output is correct
15 Correct 55 ms 40764 KB Output is correct
16 Correct 9 ms 34040 KB Output is correct
17 Correct 6 ms 33572 KB Output is correct
18 Correct 98 ms 45448 KB Output is correct
19 Execution timed out 3048 ms 46296 KB Time limit exceeded
20 Halted 0 ms 0 KB -
# Verdict Execution time Memory Grader output
1 Correct 6 ms 33616 KB Output is correct
2 Correct 6 ms 33616 KB Output is correct
3 Correct 6 ms 33788 KB Output is correct
4 Correct 6 ms 33616 KB Output is correct
5 Correct 6 ms 33616 KB Output is correct
6 Correct 6 ms 33616 KB Output is correct
7 Correct 5 ms 33616 KB Output is correct
8 Correct 6 ms 33616 KB Output is correct
9 Correct 6 ms 33616 KB Output is correct
10 Correct 5 ms 27472 KB Output is correct
11 Correct 5 ms 27472 KB Output is correct
12 Correct 5 ms 25424 KB Output is correct
13 Correct 5 ms 31568 KB Output is correct
14 Correct 6 ms 33616 KB Output is correct
15 Correct 6 ms 33616 KB Output is correct
16 Correct 6 ms 33616 KB Output is correct
17 Correct 6 ms 33616 KB Output is correct
18 Correct 6 ms 33616 KB Output is correct
19 Correct 7 ms 33616 KB Output is correct
20 Correct 6 ms 33616 KB Output is correct
21 Correct 5 ms 33616 KB Output is correct
22 Correct 5 ms 33616 KB Output is correct
23 Correct 6 ms 33616 KB Output is correct
24 Correct 6 ms 33616 KB Output is correct
25 Correct 8 ms 33616 KB Output is correct
26 Correct 11 ms 33884 KB Output is correct
27 Correct 11 ms 33872 KB Output is correct
28 Correct 136 ms 34112 KB Output is correct
29 Correct 13 ms 33872 KB Output is correct
30 Correct 12 ms 33872 KB Output is correct
31 Correct 6 ms 33616 KB Output is correct
32 Correct 168 ms 34188 KB Output is correct
33 Correct 6 ms 33616 KB Output is correct
34 Correct 7 ms 33760 KB Output is correct
35 Correct 10 ms 33856 KB Output is correct
36 Correct 10 ms 33888 KB Output is correct
37 Correct 11 ms 33872 KB Output is correct
38 Correct 6 ms 33476 KB Output is correct
39 Correct 10 ms 33872 KB Output is correct
40 Correct 8 ms 29776 KB Output is correct
41 Correct 9 ms 33872 KB Output is correct
42 Correct 6 ms 29776 KB Output is correct
43 Correct 44 ms 34128 KB Output is correct
44 Correct 6 ms 33788 KB Output is correct
45 Correct 69 ms 33872 KB Output is correct
46 Correct 15 ms 33872 KB Output is correct
47 Correct 6 ms 33784 KB Output is correct
48 Correct 10 ms 33872 KB Output is correct
49 Correct 8 ms 33872 KB Output is correct
50 Correct 82 ms 33972 KB Output is correct
51 Correct 10 ms 33996 KB Output is correct
52 Correct 6 ms 33872 KB Output is correct
53 Correct 7 ms 33872 KB Output is correct
54 Correct 9 ms 33872 KB Output is correct
55 Correct 6 ms 33616 KB Output is correct
56 Correct 53 ms 40544 KB Output is correct
57 Correct 97 ms 41964 KB Output is correct
58 Correct 12 ms 33908 KB Output is correct
59 Correct 6 ms 33616 KB Output is correct
60 Correct 6 ms 33616 KB Output is correct
61 Correct 146 ms 42080 KB Output is correct
62 Correct 8 ms 33784 KB Output is correct
63 Execution timed out 3066 ms 54600 KB Time limit exceeded
64 Halted 0 ms 0 KB -