oj.uz

Submission #682053

# Submission time Handle Problem Language Result Execution time Memory
682053 2023-01-15T12:46:18 Z Kahou Mergers (JOI19_mergers) C++14
100 / 100
 1081 ms 140128 KB 
/* In the name of God, aka Allah */
// let this be mytemp.cpp
#include<bits/stdc++.h>
using namespace std;
#define F first
#define S second
#define endl '\n'
#define mk make_pair
typedef long long ll;
typedef pair<int, int> pii;
typedef pair<ll, ll> pll;

const int N = 5e5 + 50;
int n, k, cnt[N], ans, par[N];
int pr[N], sz[N];
int d[N];
bool mark[N];
vector<int> adj[N];
map<int, int> mp[N];

int getroot(int u) {
	if (pr[u] == u) return u;
	return pr[u] = getroot(pr[u]);
}
void uniset(int u, int v) {
	u = getroot(u);
	v = getroot(v);
	if (u == v) return;
	if (sz[u] < sz[v]) swap(u, v);
	pr[v] = u;
	sz[u] += sz[v];
}
void dfs(int u, int p) {
	par[u] = p;
	for (int v:adj[u]) {
		if (v == p) continue;
		dfs(v, u);

		if (!mp[v].empty()) uniset(u, v);
		else mark[v] = 1;

		if (mp[u].size() < mp[v].size()) swap(mp[u], mp[v]);
		for (pii x:mp[v]) {
			mp[u][x.F] += x.S;
			if (mp[u][x.F] == cnt[x.F]) mp[u].erase(x.F);
		}
		mp[v].clear();
	}
}
void solve() {
	cin >> n >> k;
	for (int i = 1; i <= n-1; i++) {
		int u, v;
		cin >> u >> v;
		adj[u].push_back(v);
		adj[v].push_back(u);
	}
	for (int u = 1; u <= n; u++) {
		int c;
		cin >> c;
		mp[u][c]++;
		cnt[c]++;
		pr[u] = u;
		sz[u] = 1;
	}
	for (int u = 1; u <= n; u++) {
		if (mp[u].begin()->S == cnt[mp[u].begin()->F]) mp[u].clear();
	}
	dfs(1, 0);
	for (int u = 1; u <= n; u++) {
		if (mark[u]) {
			d[getroot(u)]++;
			d[getroot(par[u])]++;
		}
	}
	set<int> st;
	for (int u = 1; u <= n; u++) {
		if (d[u] == 1) st.insert(u);
	}
	cout << (st.size()+1)/2 << endl;
}

int main() {
	ios::sync_with_stdio(0), cin.tie(0), cout.tie(0);
	solve();
	return 0;
}

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 17 ms 35592 KB Output is correct
2 Correct 20 ms 35560 KB Output is correct
3 Correct 19 ms 35588 KB Output is correct
4 Correct 17 ms 35564 KB Output is correct
5 Correct 16 ms 35472 KB Output is correct
6 Correct 17 ms 35548 KB Output is correct
7 Correct 18 ms 35540 KB Output is correct
8 Correct 17 ms 35504 KB Output is correct
9 Correct 21 ms 35548 KB Output is correct
10 Correct 16 ms 35540 KB Output is correct
11 Correct 16 ms 35520 KB Output is correct
12 Correct 17 ms 35552 KB Output is correct
13 Correct 21 ms 35592 KB Output is correct
14 Correct 18 ms 35540 KB Output is correct
15 Correct 19 ms 35564 KB Output is correct
16 Correct 17 ms 35564 KB Output is correct
17 Correct 17 ms 35524 KB Output is correct
18 Correct 17 ms 35540 KB Output is correct
19 Correct 18 ms 35492 KB Output is correct
20 Correct 17 ms 35576 KB Output is correct
21 Correct 17 ms 35540 KB Output is correct
22 Correct 19 ms 35584 KB Output is correct
23 Correct 17 ms 35540 KB Output is correct
24 Correct 19 ms 35540 KB Output is correct

Subtask #2
24.0 / 24.0

# Verdict Execution time Memory Grader output
1 Correct 17 ms 35592 KB Output is correct
2 Correct 20 ms 35560 KB Output is correct
3 Correct 19 ms 35588 KB Output is correct
4 Correct 17 ms 35564 KB Output is correct
5 Correct 16 ms 35472 KB Output is correct
6 Correct 17 ms 35548 KB Output is correct
7 Correct 18 ms 35540 KB Output is correct
8 Correct 17 ms 35504 KB Output is correct
9 Correct 21 ms 35548 KB Output is correct
10 Correct 16 ms 35540 KB Output is correct
11 Correct 16 ms 35520 KB Output is correct
12 Correct 17 ms 35552 KB Output is correct
13 Correct 21 ms 35592 KB Output is correct
14 Correct 18 ms 35540 KB Output is correct
15 Correct 19 ms 35564 KB Output is correct
16 Correct 17 ms 35564 KB Output is correct
17 Correct 17 ms 35524 KB Output is correct
18 Correct 17 ms 35540 KB Output is correct
19 Correct 18 ms 35492 KB Output is correct
20 Correct 17 ms 35576 KB Output is correct
21 Correct 17 ms 35540 KB Output is correct
22 Correct 19 ms 35584 KB Output is correct
23 Correct 17 ms 35540 KB Output is correct
24 Correct 19 ms 35540 KB Output is correct
25 Correct 17 ms 35540 KB Output is correct
26 Correct 18 ms 35796 KB Output is correct
27 Correct 19 ms 35916 KB Output is correct
28 Correct 23 ms 36056 KB Output is correct
29 Correct 19 ms 35796 KB Output is correct
30 Correct 20 ms 35860 KB Output is correct
31 Correct 17 ms 35600 KB Output is correct
32 Correct 20 ms 36180 KB Output is correct
33 Correct 21 ms 35564 KB Output is correct
34 Correct 17 ms 35836 KB Output is correct
35 Correct 19 ms 35772 KB Output is correct
36 Correct 18 ms 35812 KB Output is correct
37 Correct 18 ms 35792 KB Output is correct
38 Correct 17 ms 35540 KB Output is correct
39 Correct 20 ms 35776 KB Output is correct
40 Correct 20 ms 35852 KB Output is correct
41 Correct 19 ms 35796 KB Output is correct
42 Correct 19 ms 35796 KB Output is correct
43 Correct 18 ms 36284 KB Output is correct
44 Correct 18 ms 35540 KB Output is correct
45 Correct 18 ms 35944 KB Output is correct
46 Correct 19 ms 35796 KB Output is correct
47 Correct 17 ms 35540 KB Output is correct
48 Correct 19 ms 35796 KB Output is correct
49 Correct 24 ms 35832 KB Output is correct
50 Correct 19 ms 35900 KB Output is correct
51 Correct 21 ms 35816 KB Output is correct
52 Correct 19 ms 35768 KB Output is correct
53 Correct 19 ms 35836 KB Output is correct
54 Correct 20 ms 35764 KB Output is correct

Subtask #3
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 17 ms 35592 KB Output is correct
2 Correct 20 ms 35560 KB Output is correct
3 Correct 19 ms 35588 KB Output is correct
4 Correct 17 ms 35564 KB Output is correct
5 Correct 16 ms 35472 KB Output is correct
6 Correct 17 ms 35548 KB Output is correct
7 Correct 18 ms 35540 KB Output is correct
8 Correct 17 ms 35504 KB Output is correct
9 Correct 21 ms 35548 KB Output is correct
10 Correct 16 ms 35540 KB Output is correct
11 Correct 16 ms 35520 KB Output is correct
12 Correct 17 ms 35552 KB Output is correct
13 Correct 21 ms 35592 KB Output is correct
14 Correct 18 ms 35540 KB Output is correct
15 Correct 19 ms 35564 KB Output is correct
16 Correct 17 ms 35564 KB Output is correct
17 Correct 17 ms 35524 KB Output is correct
18 Correct 17 ms 35540 KB Output is correct
19 Correct 18 ms 35492 KB Output is correct
20 Correct 17 ms 35576 KB Output is correct
21 Correct 17 ms 35540 KB Output is correct
22 Correct 19 ms 35584 KB Output is correct
23 Correct 17 ms 35540 KB Output is correct
24 Correct 19 ms 35540 KB Output is correct
25 Correct 17 ms 35596 KB Output is correct
26 Correct 81 ms 44916 KB Output is correct
27 Correct 120 ms 44792 KB Output is correct
28 Correct 20 ms 35864 KB Output is correct
29 Correct 17 ms 35516 KB Output is correct
30 Correct 18 ms 35472 KB Output is correct
31 Correct 86 ms 45028 KB Output is correct
32 Correct 24 ms 35788 KB Output is correct
33 Correct 112 ms 59124 KB Output is correct
34 Correct 105 ms 44648 KB Output is correct
35 Correct 20 ms 35852 KB Output is correct
36 Correct 95 ms 46408 KB Output is correct
37 Correct 18 ms 35916 KB Output is correct
38 Correct 19 ms 35876 KB Output is correct
39 Correct 76 ms 44948 KB Output is correct
40 Correct 21 ms 36328 KB Output is correct
41 Correct 84 ms 44684 KB Output is correct
42 Correct 106 ms 49416 KB Output is correct
43 Correct 17 ms 35508 KB Output is correct
44 Correct 96 ms 59720 KB Output is correct
45 Correct 102 ms 52212 KB Output is correct
46 Correct 23 ms 35788 KB Output is correct
47 Correct 19 ms 35744 KB Output is correct

Subtask #4
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 75 ms 44908 KB Output is correct
2 Correct 80 ms 45796 KB Output is correct
3 Correct 19 ms 35780 KB Output is correct
4 Correct 20 ms 35796 KB Output is correct
5 Correct 18 ms 35536 KB Output is correct
6 Correct 17 ms 35476 KB Output is correct
7 Correct 19 ms 35768 KB Output is correct
8 Correct 109 ms 45372 KB Output is correct
9 Correct 19 ms 35796 KB Output is correct
10 Correct 84 ms 45104 KB Output is correct
11 Correct 17 ms 35504 KB Output is correct
12 Correct 94 ms 45164 KB Output is correct
13 Correct 96 ms 45388 KB Output is correct
14 Correct 82 ms 45568 KB Output is correct
15 Correct 78 ms 45044 KB Output is correct
16 Correct 23 ms 35956 KB Output is correct
17 Correct 19 ms 35548 KB Output is correct
18 Correct 89 ms 45728 KB Output is correct
19 Correct 82 ms 53432 KB Output is correct
20 Correct 20 ms 35784 KB Output is correct
21 Correct 20 ms 35596 KB Output is correct
22 Correct 110 ms 45564 KB Output is correct
23 Correct 19 ms 35888 KB Output is correct
24 Correct 109 ms 45104 KB Output is correct
25 Correct 87 ms 50844 KB Output is correct
26 Correct 20 ms 35796 KB Output is correct
27 Correct 19 ms 36052 KB Output is correct
28 Correct 20 ms 35876 KB Output is correct
29 Correct 20 ms 35784 KB Output is correct
30 Correct 20 ms 35896 KB Output is correct

Subtask #5
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 17 ms 35592 KB Output is correct
2 Correct 20 ms 35560 KB Output is correct
3 Correct 19 ms 35588 KB Output is correct
4 Correct 17 ms 35564 KB Output is correct
5 Correct 16 ms 35472 KB Output is correct
6 Correct 17 ms 35548 KB Output is correct
7 Correct 18 ms 35540 KB Output is correct
8 Correct 17 ms 35504 KB Output is correct
9 Correct 21 ms 35548 KB Output is correct
10 Correct 16 ms 35540 KB Output is correct
11 Correct 16 ms 35520 KB Output is correct
12 Correct 17 ms 35552 KB Output is correct
13 Correct 21 ms 35592 KB Output is correct
14 Correct 18 ms 35540 KB Output is correct
15 Correct 19 ms 35564 KB Output is correct
16 Correct 17 ms 35564 KB Output is correct
17 Correct 17 ms 35524 KB Output is correct
18 Correct 17 ms 35540 KB Output is correct
19 Correct 18 ms 35492 KB Output is correct
20 Correct 17 ms 35576 KB Output is correct
21 Correct 17 ms 35540 KB Output is correct
22 Correct 19 ms 35584 KB Output is correct
23 Correct 17 ms 35540 KB Output is correct
24 Correct 19 ms 35540 KB Output is correct
25 Correct 17 ms 35540 KB Output is correct
26 Correct 18 ms 35796 KB Output is correct
27 Correct 19 ms 35916 KB Output is correct
28 Correct 23 ms 36056 KB Output is correct
29 Correct 19 ms 35796 KB Output is correct
30 Correct 20 ms 35860 KB Output is correct
31 Correct 17 ms 35600 KB Output is correct
32 Correct 20 ms 36180 KB Output is correct
33 Correct 21 ms 35564 KB Output is correct
34 Correct 17 ms 35836 KB Output is correct
35 Correct 19 ms 35772 KB Output is correct
36 Correct 18 ms 35812 KB Output is correct
37 Correct 18 ms 35792 KB Output is correct
38 Correct 17 ms 35540 KB Output is correct
39 Correct 20 ms 35776 KB Output is correct
40 Correct 20 ms 35852 KB Output is correct
41 Correct 19 ms 35796 KB Output is correct
42 Correct 19 ms 35796 KB Output is correct
43 Correct 18 ms 36284 KB Output is correct
44 Correct 18 ms 35540 KB Output is correct
45 Correct 18 ms 35944 KB Output is correct
46 Correct 19 ms 35796 KB Output is correct
47 Correct 17 ms 35540 KB Output is correct
48 Correct 19 ms 35796 KB Output is correct
49 Correct 24 ms 35832 KB Output is correct
50 Correct 19 ms 35900 KB Output is correct
51 Correct 21 ms 35816 KB Output is correct
52 Correct 19 ms 35768 KB Output is correct
53 Correct 19 ms 35836 KB Output is correct
54 Correct 20 ms 35764 KB Output is correct
55 Correct 17 ms 35596 KB Output is correct
56 Correct 81 ms 44916 KB Output is correct
57 Correct 120 ms 44792 KB Output is correct
58 Correct 20 ms 35864 KB Output is correct
59 Correct 17 ms 35516 KB Output is correct
60 Correct 18 ms 35472 KB Output is correct
61 Correct 86 ms 45028 KB Output is correct
62 Correct 24 ms 35788 KB Output is correct
63 Correct 112 ms 59124 KB Output is correct
64 Correct 105 ms 44648 KB Output is correct
65 Correct 20 ms 35852 KB Output is correct
66 Correct 95 ms 46408 KB Output is correct
67 Correct 18 ms 35916 KB Output is correct
68 Correct 19 ms 35876 KB Output is correct
69 Correct 76 ms 44948 KB Output is correct
70 Correct 21 ms 36328 KB Output is correct
71 Correct 84 ms 44684 KB Output is correct
72 Correct 106 ms 49416 KB Output is correct
73 Correct 17 ms 35508 KB Output is correct
74 Correct 96 ms 59720 KB Output is correct
75 Correct 102 ms 52212 KB Output is correct
76 Correct 23 ms 35788 KB Output is correct
77 Correct 19 ms 35744 KB Output is correct
78 Correct 75 ms 44908 KB Output is correct
79 Correct 80 ms 45796 KB Output is correct
80 Correct 19 ms 35780 KB Output is correct
81 Correct 20 ms 35796 KB Output is correct
82 Correct 18 ms 35536 KB Output is correct
83 Correct 17 ms 35476 KB Output is correct
84 Correct 19 ms 35768 KB Output is correct
85 Correct 109 ms 45372 KB Output is correct
86 Correct 19 ms 35796 KB Output is correct
87 Correct 84 ms 45104 KB Output is correct
88 Correct 17 ms 35504 KB Output is correct
89 Correct 94 ms 45164 KB Output is correct
90 Correct 96 ms 45388 KB Output is correct
91 Correct 82 ms 45568 KB Output is correct
92 Correct 78 ms 45044 KB Output is correct
93 Correct 23 ms 35956 KB Output is correct
94 Correct 19 ms 35548 KB Output is correct
95 Correct 89 ms 45728 KB Output is correct
96 Correct 82 ms 53432 KB Output is correct
97 Correct 20 ms 35784 KB Output is correct
98 Correct 20 ms 35596 KB Output is correct
99 Correct 110 ms 45564 KB Output is correct
100 Correct 19 ms 35888 KB Output is correct
101 Correct 109 ms 45104 KB Output is correct
102 Correct 87 ms 50844 KB Output is correct
103 Correct 20 ms 35796 KB Output is correct
104 Correct 19 ms 36052 KB Output is correct
105 Correct 20 ms 35876 KB Output is correct
106 Correct 20 ms 35784 KB Output is correct
107 Correct 20 ms 35896 KB Output is correct
108 Correct 800 ms 85732 KB Output is correct
109 Correct 636 ms 117600 KB Output is correct
110 Correct 641 ms 140128 KB Output is correct
111 Correct 585 ms 132092 KB Output is correct
112 Correct 636 ms 112508 KB Output is correct
113 Correct 485 ms 86612 KB Output is correct
114 Correct 554 ms 81116 KB Output is correct
115 Correct 524 ms 81112 KB Output is correct
116 Correct 844 ms 83800 KB Output is correct
117 Correct 507 ms 85508 KB Output is correct
118 Correct 520 ms 82208 KB Output is correct
119 Correct 538 ms 85532 KB Output is correct
120 Correct 564 ms 113996 KB Output is correct
121 Correct 539 ms 85472 KB Output is correct
122 Correct 1081 ms 84692 KB Output is correct
123 Correct 442 ms 86852 KB Output is correct
124 Correct 509 ms 84828 KB Output is correct