oj.uz

Submission #647412

# Submission time Handle Problem Language Result Execution time Memory
647412 2022-10-02T12:35:40 Z ymm Mergers (JOI19_mergers) C++17
100 / 100
 1220 ms 126520 KB 
#include <bits/stdc++.h>
#define Loop(x,l,r) for (ll x = (l); x < (ll)(r); ++x)
#define LoopR(x,l,r) for (ll x = (r)-1; x >= (ll)(l); --x)
typedef long long ll;
typedef std::pair<int, int> pii;
typedef std::pair<ll , ll > pll;
using namespace std;

const int N = 500'010;
int col[N];
int cnt_col[N];
bool is_in_sub[N];
vector<int> A[N];
int n, k;

class s2l {
private:
	int cnt_unfin = 0;
	map<int, int> mp;
public:
	void insert(int x, int cnt=1)
	{
		int &val = mp[x];
		cnt_unfin += val == 0;
		val += cnt;
		cnt_unfin -= val == cnt_col[x];
	}
	void merge(s2l *that)
	{
		if (this->mp.size() < that->mp.size()) {
			this->mp.swap(that->mp);
			swap(this->cnt_unfin, that->cnt_unfin);
		}
		for (auto [x, y] : that->mp)
			this->insert(x, y);
		delete(that);
	}
	bool has_unfin()
	{
		return cnt_unfin;
	}
};

s2l *dfs1(int v, int p)
{
	s2l *obj = new s2l;
	obj->insert(col[v]);
	for (int u : A[v]) {
		if (u != p)
			obj->merge(dfs1(u, v));
	}
	if (!obj->has_unfin() && p != -1) {
		is_in_sub[v] = 1;
		is_in_sub[p] = 1;
	}
	return obj;
}

bool dfs2(int v, int p)
{
	for (int u : A[v]) {
		if (u != p)
			if (dfs2(u, v))
				is_in_sub[v] = 1;
	}
	return is_in_sub[v];
}

int dfs3(int v, int p)
{
	int nbr = 0;
	int leaf = 0;
	for (int u : A[v]) {
		if (!is_in_sub[u])
			continue;
		nbr++;
		if (u == p)
			continue;
		leaf += dfs3(u, v);
	}
	leaf += nbr == 1;
	return leaf;
}

int main()
{
	cin.tie(0) -> sync_with_stdio(false);
	cin >> n >> k;
	Loop (i,1,n) {
		int v, u;
		cin >> v >> u;
		--v; --u;
		A[v].push_back(u);
		A[u].push_back(v);
	}
	Loop (i,0,n) {
		int c;
		cin >> c;
		col[i] = c-1;
		++cnt_col[c-1];
	}
	dfs1(0, -1); // I CAN LEAK ANYTHING!
	int rt;
	for (rt = 0; rt < n && !is_in_sub[rt]; ++rt);
	if (rt == n) {
		cout << "0\n";
		return 0;
	}
	dfs2(rt, -1);
	int leaves = dfs3(rt, -1);
	cout << (leaves+1)/2 << '\n';
}

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 11988 KB Output is correct
2 Correct 8 ms 12068 KB Output is correct
3 Correct 8 ms 12008 KB Output is correct
4 Correct 7 ms 11988 KB Output is correct
5 Correct 8 ms 12072 KB Output is correct
6 Correct 9 ms 12172 KB Output is correct
7 Correct 9 ms 12072 KB Output is correct
8 Correct 9 ms 11988 KB Output is correct
9 Correct 8 ms 12080 KB Output is correct
10 Correct 7 ms 11988 KB Output is correct
11 Correct 9 ms 12108 KB Output is correct
12 Correct 7 ms 11988 KB Output is correct
13 Correct 9 ms 12076 KB Output is correct
14 Correct 8 ms 11988 KB Output is correct
15 Correct 10 ms 12072 KB Output is correct
16 Correct 7 ms 12076 KB Output is correct
17 Correct 8 ms 12076 KB Output is correct
18 Correct 9 ms 11988 KB Output is correct
19 Correct 7 ms 12076 KB Output is correct
20 Correct 8 ms 12040 KB Output is correct
21 Correct 8 ms 11988 KB Output is correct
22 Correct 7 ms 12092 KB Output is correct
23 Correct 8 ms 12080 KB Output is correct
24 Correct 7 ms 12076 KB Output is correct

Subtask #2
24.0 / 24.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 11988 KB Output is correct
2 Correct 8 ms 12068 KB Output is correct
3 Correct 8 ms 12008 KB Output is correct
4 Correct 7 ms 11988 KB Output is correct
5 Correct 8 ms 12072 KB Output is correct
6 Correct 9 ms 12172 KB Output is correct
7 Correct 9 ms 12072 KB Output is correct
8 Correct 9 ms 11988 KB Output is correct
9 Correct 8 ms 12080 KB Output is correct
10 Correct 7 ms 11988 KB Output is correct
11 Correct 9 ms 12108 KB Output is correct
12 Correct 7 ms 11988 KB Output is correct
13 Correct 9 ms 12076 KB Output is correct
14 Correct 8 ms 11988 KB Output is correct
15 Correct 10 ms 12072 KB Output is correct
16 Correct 7 ms 12076 KB Output is correct
17 Correct 8 ms 12076 KB Output is correct
18 Correct 9 ms 11988 KB Output is correct
19 Correct 7 ms 12076 KB Output is correct
20 Correct 8 ms 12040 KB Output is correct
21 Correct 8 ms 11988 KB Output is correct
22 Correct 7 ms 12092 KB Output is correct
23 Correct 8 ms 12080 KB Output is correct
24 Correct 7 ms 12076 KB Output is correct
25 Correct 8 ms 12092 KB Output is correct
26 Correct 12 ms 12336 KB Output is correct
27 Correct 9 ms 12244 KB Output is correct
28 Correct 9 ms 12628 KB Output is correct
29 Correct 11 ms 12420 KB Output is correct
30 Correct 10 ms 12212 KB Output is correct
31 Correct 8 ms 12076 KB Output is correct
32 Correct 11 ms 12680 KB Output is correct
33 Correct 8 ms 11988 KB Output is correct
34 Correct 10 ms 12232 KB Output is correct
35 Correct 11 ms 12292 KB Output is correct
36 Correct 9 ms 12196 KB Output is correct
37 Correct 10 ms 12244 KB Output is correct
38 Correct 7 ms 11988 KB Output is correct
39 Correct 10 ms 12340 KB Output is correct
40 Correct 9 ms 12160 KB Output is correct
41 Correct 9 ms 12152 KB Output is correct
42 Correct 9 ms 12340 KB Output is correct
43 Correct 10 ms 12852 KB Output is correct
44 Correct 8 ms 11988 KB Output is correct
45 Correct 10 ms 12500 KB Output is correct
46 Correct 11 ms 12244 KB Output is correct
47 Correct 10 ms 12076 KB Output is correct
48 Correct 10 ms 12212 KB Output is correct
49 Correct 10 ms 12372 KB Output is correct
50 Correct 10 ms 12500 KB Output is correct
51 Correct 10 ms 12244 KB Output is correct
52 Correct 12 ms 12244 KB Output is correct
53 Correct 11 ms 12212 KB Output is correct
54 Correct 11 ms 12128 KB Output is correct

Subtask #3
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 11988 KB Output is correct
2 Correct 8 ms 12068 KB Output is correct
3 Correct 8 ms 12008 KB Output is correct
4 Correct 7 ms 11988 KB Output is correct
5 Correct 8 ms 12072 KB Output is correct
6 Correct 9 ms 12172 KB Output is correct
7 Correct 9 ms 12072 KB Output is correct
8 Correct 9 ms 11988 KB Output is correct
9 Correct 8 ms 12080 KB Output is correct
10 Correct 7 ms 11988 KB Output is correct
11 Correct 9 ms 12108 KB Output is correct
12 Correct 7 ms 11988 KB Output is correct
13 Correct 9 ms 12076 KB Output is correct
14 Correct 8 ms 11988 KB Output is correct
15 Correct 10 ms 12072 KB Output is correct
16 Correct 7 ms 12076 KB Output is correct
17 Correct 8 ms 12076 KB Output is correct
18 Correct 9 ms 11988 KB Output is correct
19 Correct 7 ms 12076 KB Output is correct
20 Correct 8 ms 12040 KB Output is correct
21 Correct 8 ms 11988 KB Output is correct
22 Correct 7 ms 12092 KB Output is correct
23 Correct 8 ms 12080 KB Output is correct
24 Correct 7 ms 12076 KB Output is correct
25 Correct 9 ms 12072 KB Output is correct
26 Correct 46 ms 17344 KB Output is correct
27 Correct 83 ms 17172 KB Output is correct
28 Correct 8 ms 12244 KB Output is correct
29 Correct 7 ms 11988 KB Output is correct
30 Correct 8 ms 12008 KB Output is correct
31 Correct 61 ms 17232 KB Output is correct
32 Correct 7 ms 12216 KB Output is correct
33 Correct 96 ms 38860 KB Output is correct
34 Correct 87 ms 17148 KB Output is correct
35 Correct 8 ms 12244 KB Output is correct
36 Correct 107 ms 19660 KB Output is correct
37 Correct 8 ms 12212 KB Output is correct
38 Correct 8 ms 12212 KB Output is correct
39 Correct 53 ms 17292 KB Output is correct
40 Correct 8 ms 12884 KB Output is correct
41 Correct 76 ms 16980 KB Output is correct
42 Correct 110 ms 24216 KB Output is correct
43 Correct 7 ms 11988 KB Output is correct
44 Correct 92 ms 39648 KB Output is correct
45 Correct 82 ms 29612 KB Output is correct
46 Correct 8 ms 12216 KB Output is correct
47 Correct 9 ms 12244 KB Output is correct

Subtask #4
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 51 ms 17356 KB Output is correct
2 Correct 94 ms 22804 KB Output is correct
3 Correct 9 ms 12248 KB Output is correct
4 Correct 8 ms 12168 KB Output is correct
5 Correct 6 ms 11988 KB Output is correct
6 Correct 6 ms 11988 KB Output is correct
7 Correct 8 ms 12196 KB Output is correct
8 Correct 128 ms 20264 KB Output is correct
9 Correct 8 ms 12244 KB Output is correct
10 Correct 88 ms 17292 KB Output is correct
11 Correct 9 ms 11988 KB Output is correct
12 Correct 83 ms 17436 KB Output is correct
13 Correct 118 ms 20420 KB Output is correct
14 Correct 151 ms 23760 KB Output is correct
15 Correct 45 ms 17348 KB Output is correct
16 Correct 8 ms 12244 KB Output is correct
17 Correct 8 ms 12008 KB Output is correct
18 Correct 111 ms 22328 KB Output is correct
19 Correct 145 ms 32600 KB Output is correct
20 Correct 8 ms 12244 KB Output is correct
21 Correct 7 ms 12076 KB Output is correct
22 Correct 70 ms 20164 KB Output is correct
23 Correct 8 ms 12244 KB Output is correct
24 Correct 75 ms 17996 KB Output is correct
25 Correct 142 ms 28828 KB Output is correct
26 Correct 8 ms 12284 KB Output is correct
27 Correct 9 ms 12500 KB Output is correct
28 Correct 8 ms 12244 KB Output is correct
29 Correct 8 ms 12148 KB Output is correct
30 Correct 8 ms 12312 KB Output is correct

Subtask #5
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 11988 KB Output is correct
2 Correct 8 ms 12068 KB Output is correct
3 Correct 8 ms 12008 KB Output is correct
4 Correct 7 ms 11988 KB Output is correct
5 Correct 8 ms 12072 KB Output is correct
6 Correct 9 ms 12172 KB Output is correct
7 Correct 9 ms 12072 KB Output is correct
8 Correct 9 ms 11988 KB Output is correct
9 Correct 8 ms 12080 KB Output is correct
10 Correct 7 ms 11988 KB Output is correct
11 Correct 9 ms 12108 KB Output is correct
12 Correct 7 ms 11988 KB Output is correct
13 Correct 9 ms 12076 KB Output is correct
14 Correct 8 ms 11988 KB Output is correct
15 Correct 10 ms 12072 KB Output is correct
16 Correct 7 ms 12076 KB Output is correct
17 Correct 8 ms 12076 KB Output is correct
18 Correct 9 ms 11988 KB Output is correct
19 Correct 7 ms 12076 KB Output is correct
20 Correct 8 ms 12040 KB Output is correct
21 Correct 8 ms 11988 KB Output is correct
22 Correct 7 ms 12092 KB Output is correct
23 Correct 8 ms 12080 KB Output is correct
24 Correct 7 ms 12076 KB Output is correct
25 Correct 8 ms 12092 KB Output is correct
26 Correct 12 ms 12336 KB Output is correct
27 Correct 9 ms 12244 KB Output is correct
28 Correct 9 ms 12628 KB Output is correct
29 Correct 11 ms 12420 KB Output is correct
30 Correct 10 ms 12212 KB Output is correct
31 Correct 8 ms 12076 KB Output is correct
32 Correct 11 ms 12680 KB Output is correct
33 Correct 8 ms 11988 KB Output is correct
34 Correct 10 ms 12232 KB Output is correct
35 Correct 11 ms 12292 KB Output is correct
36 Correct 9 ms 12196 KB Output is correct
37 Correct 10 ms 12244 KB Output is correct
38 Correct 7 ms 11988 KB Output is correct
39 Correct 10 ms 12340 KB Output is correct
40 Correct 9 ms 12160 KB Output is correct
41 Correct 9 ms 12152 KB Output is correct
42 Correct 9 ms 12340 KB Output is correct
43 Correct 10 ms 12852 KB Output is correct
44 Correct 8 ms 11988 KB Output is correct
45 Correct 10 ms 12500 KB Output is correct
46 Correct 11 ms 12244 KB Output is correct
47 Correct 10 ms 12076 KB Output is correct
48 Correct 10 ms 12212 KB Output is correct
49 Correct 10 ms 12372 KB Output is correct
50 Correct 10 ms 12500 KB Output is correct
51 Correct 10 ms 12244 KB Output is correct
52 Correct 12 ms 12244 KB Output is correct
53 Correct 11 ms 12212 KB Output is correct
54 Correct 11 ms 12128 KB Output is correct
55 Correct 9 ms 12072 KB Output is correct
56 Correct 46 ms 17344 KB Output is correct
57 Correct 83 ms 17172 KB Output is correct
58 Correct 8 ms 12244 KB Output is correct
59 Correct 7 ms 11988 KB Output is correct
60 Correct 8 ms 12008 KB Output is correct
61 Correct 61 ms 17232 KB Output is correct
62 Correct 7 ms 12216 KB Output is correct
63 Correct 96 ms 38860 KB Output is correct
64 Correct 87 ms 17148 KB Output is correct
65 Correct 8 ms 12244 KB Output is correct
66 Correct 107 ms 19660 KB Output is correct
67 Correct 8 ms 12212 KB Output is correct
68 Correct 8 ms 12212 KB Output is correct
69 Correct 53 ms 17292 KB Output is correct
70 Correct 8 ms 12884 KB Output is correct
71 Correct 76 ms 16980 KB Output is correct
72 Correct 110 ms 24216 KB Output is correct
73 Correct 7 ms 11988 KB Output is correct
74 Correct 92 ms 39648 KB Output is correct
75 Correct 82 ms 29612 KB Output is correct
76 Correct 8 ms 12216 KB Output is correct
77 Correct 9 ms 12244 KB Output is correct
78 Correct 51 ms 17356 KB Output is correct
79 Correct 94 ms 22804 KB Output is correct
80 Correct 9 ms 12248 KB Output is correct
81 Correct 8 ms 12168 KB Output is correct
82 Correct 6 ms 11988 KB Output is correct
83 Correct 6 ms 11988 KB Output is correct
84 Correct 8 ms 12196 KB Output is correct
85 Correct 128 ms 20264 KB Output is correct
86 Correct 8 ms 12244 KB Output is correct
87 Correct 88 ms 17292 KB Output is correct
88 Correct 9 ms 11988 KB Output is correct
89 Correct 83 ms 17436 KB Output is correct
90 Correct 118 ms 20420 KB Output is correct
91 Correct 151 ms 23760 KB Output is correct
92 Correct 45 ms 17348 KB Output is correct
93 Correct 8 ms 12244 KB Output is correct
94 Correct 8 ms 12008 KB Output is correct
95 Correct 111 ms 22328 KB Output is correct
96 Correct 145 ms 32600 KB Output is correct
97 Correct 8 ms 12244 KB Output is correct
98 Correct 7 ms 12076 KB Output is correct
99 Correct 70 ms 20164 KB Output is correct
100 Correct 8 ms 12244 KB Output is correct
101 Correct 75 ms 17996 KB Output is correct
102 Correct 142 ms 28828 KB Output is correct
103 Correct 8 ms 12284 KB Output is correct
104 Correct 9 ms 12500 KB Output is correct
105 Correct 8 ms 12244 KB Output is correct
106 Correct 8 ms 12148 KB Output is correct
107 Correct 8 ms 12312 KB Output is correct
108 Correct 561 ms 52284 KB Output is correct
109 Correct 656 ms 92972 KB Output is correct
110 Correct 558 ms 126520 KB Output is correct
111 Correct 1220 ms 118076 KB Output is correct
112 Correct 1047 ms 98164 KB Output is correct
113 Correct 665 ms 65144 KB Output is correct
114 Correct 552 ms 37968 KB Output is correct
115 Correct 509 ms 37956 KB Output is correct
116 Correct 762 ms 46852 KB Output is correct
117 Correct 1137 ms 69160 KB Output is correct
118 Correct 517 ms 38752 KB Output is correct
119 Correct 1052 ms 68380 KB Output is correct
120 Correct 1035 ms 98136 KB Output is correct
121 Correct 1176 ms 66996 KB Output is correct
122 Correct 1040 ms 57852 KB Output is correct
123 Correct 655 ms 67600 KB Output is correct
124 Correct 1108 ms 67824 KB Output is correct