oj.uz

Submission #1114225

# Submission time Handle Problem Language Result Execution time Memory
1114225 2024-11-18T11:50:31 Z Dan4Life Mergers (JOI19_mergers) C++17
48 / 100
 3000 ms 66632 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)
#define int long long
using ar2 = array<int,2>;
const int N = (int)2e5+10;
const int LINF = (int)1e18;
int n, k;
vector<int> adj[N];
int p[N], sz[N];
int a[N], tot[N], deg[N];
set<ar2> S[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){
	S[s].insert({a[s],1});
	for(auto u : adj[s]){
		if(u==p) continue;
		dfs(u,s);
		if(sz(S[s]) < sz(S[u])) S[s].swap(S[u]);
		for(auto [v,w] : S[u]){
			auto itr = S[s].lower_bound({v,-1});
			int cnt = 0;
			if(itr!=end(S[s]) and (*itr)[0]==v)
				cnt = ((*itr)[1]), S[s].erase(itr);
			S[s].insert({v,cnt+w});
		}
	}
	int ok = 1;
	for(auto [u,v] : S[s]) ok&=(tot[u]==v);
	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++)
		for(int j : adj[i])
			if(findSet(i)!=findSet(j)) 
				deg[findSet(i)]++;
	int cnt = 1;
	for(int i = 1; i <= n; i++) cnt+=(deg[i]==1);
	cout << cnt/2 << "\n";
}

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 22352 KB Output is correct
2 Correct 4 ms 22352 KB Output is correct
3 Correct 6 ms 22372 KB Output is correct
4 Correct 5 ms 22352 KB Output is correct
5 Correct 4 ms 22332 KB Output is correct
6 Correct 4 ms 22336 KB Output is correct
7 Correct 5 ms 22380 KB Output is correct
8 Correct 4 ms 22352 KB Output is correct
9 Correct 5 ms 22352 KB Output is correct
10 Correct 5 ms 22352 KB Output is correct
11 Correct 5 ms 22352 KB Output is correct
12 Correct 4 ms 22352 KB Output is correct
13 Correct 4 ms 22352 KB Output is correct
14 Correct 4 ms 22352 KB Output is correct
15 Correct 4 ms 22352 KB Output is correct
16 Correct 4 ms 22352 KB Output is correct
17 Correct 4 ms 22352 KB Output is correct
18 Correct 4 ms 22352 KB Output is correct
19 Correct 4 ms 22324 KB Output is correct
20 Correct 5 ms 22520 KB Output is correct
21 Correct 4 ms 22352 KB Output is correct
22 Correct 4 ms 22352 KB Output is correct
23 Correct 5 ms 22368 KB Output is correct
24 Correct 4 ms 22364 KB Output is correct

Subtask #2
24.0 / 24.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 22352 KB Output is correct
2 Correct 4 ms 22352 KB Output is correct
3 Correct 6 ms 22372 KB Output is correct
4 Correct 5 ms 22352 KB Output is correct
5 Correct 4 ms 22332 KB Output is correct
6 Correct 4 ms 22336 KB Output is correct
7 Correct 5 ms 22380 KB Output is correct
8 Correct 4 ms 22352 KB Output is correct
9 Correct 5 ms 22352 KB Output is correct
10 Correct 5 ms 22352 KB Output is correct
11 Correct 5 ms 22352 KB Output is correct
12 Correct 4 ms 22352 KB Output is correct
13 Correct 4 ms 22352 KB Output is correct
14 Correct 4 ms 22352 KB Output is correct
15 Correct 4 ms 22352 KB Output is correct
16 Correct 4 ms 22352 KB Output is correct
17 Correct 4 ms 22352 KB Output is correct
18 Correct 4 ms 22352 KB Output is correct
19 Correct 4 ms 22324 KB Output is correct
20 Correct 5 ms 22520 KB Output is correct
21 Correct 4 ms 22352 KB Output is correct
22 Correct 4 ms 22352 KB Output is correct
23 Correct 5 ms 22368 KB Output is correct
24 Correct 4 ms 22364 KB Output is correct
25 Correct 4 ms 22520 KB Output is correct
26 Correct 9 ms 23120 KB Output is correct
27 Correct 6 ms 22608 KB Output is correct
28 Correct 21 ms 23068 KB Output is correct
29 Correct 9 ms 23376 KB Output is correct
30 Correct 8 ms 22864 KB Output is correct
31 Correct 5 ms 22352 KB Output is correct
32 Correct 25 ms 23120 KB Output is correct
33 Correct 5 ms 22352 KB Output is correct
34 Correct 7 ms 22492 KB Output is correct
35 Correct 9 ms 23376 KB Output is correct
36 Correct 6 ms 22608 KB Output is correct
37 Correct 11 ms 23120 KB Output is correct
38 Correct 5 ms 22352 KB Output is correct
39 Correct 9 ms 23120 KB Output is correct
40 Correct 6 ms 22608 KB Output is correct
41 Correct 6 ms 22608 KB Output is correct
42 Correct 7 ms 22864 KB Output is correct
43 Correct 7 ms 23128 KB Output is correct
44 Correct 4 ms 22352 KB Output is correct
45 Correct 13 ms 23120 KB Output is correct
46 Correct 8 ms 22864 KB Output is correct
47 Correct 5 ms 22352 KB Output is correct
48 Correct 7 ms 22608 KB Output is correct
49 Correct 9 ms 22864 KB Output is correct
50 Correct 16 ms 23116 KB Output is correct
51 Correct 7 ms 22608 KB Output is correct
52 Correct 7 ms 22608 KB Output is correct
53 Correct 7 ms 22608 KB Output is correct
54 Correct 8 ms 22740 KB Output is correct

Subtask #3
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 22352 KB Output is correct
2 Correct 4 ms 22352 KB Output is correct
3 Correct 6 ms 22372 KB Output is correct
4 Correct 5 ms 22352 KB Output is correct
5 Correct 4 ms 22332 KB Output is correct
6 Correct 4 ms 22336 KB Output is correct
7 Correct 5 ms 22380 KB Output is correct
8 Correct 4 ms 22352 KB Output is correct
9 Correct 5 ms 22352 KB Output is correct
10 Correct 5 ms 22352 KB Output is correct
11 Correct 5 ms 22352 KB Output is correct
12 Correct 4 ms 22352 KB Output is correct
13 Correct 4 ms 22352 KB Output is correct
14 Correct 4 ms 22352 KB Output is correct
15 Correct 4 ms 22352 KB Output is correct
16 Correct 4 ms 22352 KB Output is correct
17 Correct 4 ms 22352 KB Output is correct
18 Correct 4 ms 22352 KB Output is correct
19 Correct 4 ms 22324 KB Output is correct
20 Correct 5 ms 22520 KB Output is correct
21 Correct 4 ms 22352 KB Output is correct
22 Correct 4 ms 22352 KB Output is correct
23 Correct 5 ms 22368 KB Output is correct
24 Correct 4 ms 22364 KB Output is correct
25 Correct 5 ms 22352 KB Output is correct
26 Correct 70 ms 33756 KB Output is correct
27 Correct 132 ms 42612 KB Output is correct
28 Correct 6 ms 22608 KB Output is correct
29 Correct 5 ms 22352 KB Output is correct
30 Correct 5 ms 22320 KB Output is correct
31 Correct 72 ms 33608 KB Output is correct
32 Correct 6 ms 22608 KB Output is correct
33 Correct 131 ms 47712 KB Output is correct
34 Correct 117 ms 40776 KB Output is correct
35 Correct 6 ms 22608 KB Output is correct
36 Correct 74 ms 34896 KB Output is correct
37 Correct 6 ms 22620 KB Output is correct
38 Correct 6 ms 22608 KB Output is correct
39 Correct 66 ms 33848 KB Output is correct
40 Correct 6 ms 23120 KB Output is correct
41 Correct 68 ms 33608 KB Output is correct
42 Correct 100 ms 37964 KB Output is correct
43 Correct 5 ms 22352 KB Output is correct
44 Correct 87 ms 48088 KB Output is correct
45 Correct 115 ms 43336 KB Output is correct
46 Correct 7 ms 22608 KB Output is correct
47 Correct 7 ms 22864 KB Output is correct

Subtask #4
0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 72 ms 33912 KB Output is correct
2 Correct 122 ms 40328 KB Output is correct
3 Correct 11 ms 22988 KB Output is correct
4 Correct 6 ms 22608 KB Output is correct
5 Correct 4 ms 22352 KB Output is correct
6 Correct 4 ms 22352 KB Output is correct
7 Correct 7 ms 22608 KB Output is correct
8 Correct 191 ms 51024 KB Output is correct
9 Correct 6 ms 22608 KB Output is correct
10 Correct 62 ms 34040 KB Output is correct
11 Correct 4 ms 22352 KB Output is correct
12 Correct 61 ms 33612 KB Output is correct
13 Correct 147 ms 49736 KB Output is correct
14 Correct 197 ms 66632 KB Output is correct
15 Correct 81 ms 33856 KB Output is correct
16 Correct 7 ms 22880 KB Output is correct
17 Correct 4 ms 22364 KB Output is correct
18 Correct 118 ms 41532 KB Output is correct
19 Execution timed out 3072 ms 39188 KB Time limit exceeded
20 Halted 0 ms 0 KB -

Subtask #5
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 22352 KB Output is correct
2 Correct 4 ms 22352 KB Output is correct
3 Correct 6 ms 22372 KB Output is correct
4 Correct 5 ms 22352 KB Output is correct
5 Correct 4 ms 22332 KB Output is correct
6 Correct 4 ms 22336 KB Output is correct
7 Correct 5 ms 22380 KB Output is correct
8 Correct 4 ms 22352 KB Output is correct
9 Correct 5 ms 22352 KB Output is correct
10 Correct 5 ms 22352 KB Output is correct
11 Correct 5 ms 22352 KB Output is correct
12 Correct 4 ms 22352 KB Output is correct
13 Correct 4 ms 22352 KB Output is correct
14 Correct 4 ms 22352 KB Output is correct
15 Correct 4 ms 22352 KB Output is correct
16 Correct 4 ms 22352 KB Output is correct
17 Correct 4 ms 22352 KB Output is correct
18 Correct 4 ms 22352 KB Output is correct
19 Correct 4 ms 22324 KB Output is correct
20 Correct 5 ms 22520 KB Output is correct
21 Correct 4 ms 22352 KB Output is correct
22 Correct 4 ms 22352 KB Output is correct
23 Correct 5 ms 22368 KB Output is correct
24 Correct 4 ms 22364 KB Output is correct
25 Correct 4 ms 22520 KB Output is correct
26 Correct 9 ms 23120 KB Output is correct
27 Correct 6 ms 22608 KB Output is correct
28 Correct 21 ms 23068 KB Output is correct
29 Correct 9 ms 23376 KB Output is correct
30 Correct 8 ms 22864 KB Output is correct
31 Correct 5 ms 22352 KB Output is correct
32 Correct 25 ms 23120 KB Output is correct
33 Correct 5 ms 22352 KB Output is correct
34 Correct 7 ms 22492 KB Output is correct
35 Correct 9 ms 23376 KB Output is correct
36 Correct 6 ms 22608 KB Output is correct
37 Correct 11 ms 23120 KB Output is correct
38 Correct 5 ms 22352 KB Output is correct
39 Correct 9 ms 23120 KB Output is correct
40 Correct 6 ms 22608 KB Output is correct
41 Correct 6 ms 22608 KB Output is correct
42 Correct 7 ms 22864 KB Output is correct
43 Correct 7 ms 23128 KB Output is correct
44 Correct 4 ms 22352 KB Output is correct
45 Correct 13 ms 23120 KB Output is correct
46 Correct 8 ms 22864 KB Output is correct
47 Correct 5 ms 22352 KB Output is correct
48 Correct 7 ms 22608 KB Output is correct
49 Correct 9 ms 22864 KB Output is correct
50 Correct 16 ms 23116 KB Output is correct
51 Correct 7 ms 22608 KB Output is correct
52 Correct 7 ms 22608 KB Output is correct
53 Correct 7 ms 22608 KB Output is correct
54 Correct 8 ms 22740 KB Output is correct
55 Correct 5 ms 22352 KB Output is correct
56 Correct 70 ms 33756 KB Output is correct
57 Correct 132 ms 42612 KB Output is correct
58 Correct 6 ms 22608 KB Output is correct
59 Correct 5 ms 22352 KB Output is correct
60 Correct 5 ms 22320 KB Output is correct
61 Correct 72 ms 33608 KB Output is correct
62 Correct 6 ms 22608 KB Output is correct
63 Correct 131 ms 47712 KB Output is correct
64 Correct 117 ms 40776 KB Output is correct
65 Correct 6 ms 22608 KB Output is correct
66 Correct 74 ms 34896 KB Output is correct
67 Correct 6 ms 22620 KB Output is correct
68 Correct 6 ms 22608 KB Output is correct
69 Correct 66 ms 33848 KB Output is correct
70 Correct 6 ms 23120 KB Output is correct
71 Correct 68 ms 33608 KB Output is correct
72 Correct 100 ms 37964 KB Output is correct
73 Correct 5 ms 22352 KB Output is correct
74 Correct 87 ms 48088 KB Output is correct
75 Correct 115 ms 43336 KB Output is correct
76 Correct 7 ms 22608 KB Output is correct
77 Correct 7 ms 22864 KB Output is correct
78 Correct 72 ms 33912 KB Output is correct
79 Correct 122 ms 40328 KB Output is correct
80 Correct 11 ms 22988 KB Output is correct
81 Correct 6 ms 22608 KB Output is correct
82 Correct 4 ms 22352 KB Output is correct
83 Correct 4 ms 22352 KB Output is correct
84 Correct 7 ms 22608 KB Output is correct
85 Correct 191 ms 51024 KB Output is correct
86 Correct 6 ms 22608 KB Output is correct
87 Correct 62 ms 34040 KB Output is correct
88 Correct 4 ms 22352 KB Output is correct
89 Correct 61 ms 33612 KB Output is correct
90 Correct 147 ms 49736 KB Output is correct
91 Correct 197 ms 66632 KB Output is correct
92 Correct 81 ms 33856 KB Output is correct
93 Correct 7 ms 22880 KB Output is correct
94 Correct 4 ms 22364 KB Output is correct
95 Correct 118 ms 41532 KB Output is correct
96 Execution timed out 3072 ms 39188 KB Time limit exceeded
97 Halted 0 ms 0 KB -