oj.uz

Submission #819311

# Submission time Handle Problem Language Result Execution time Memory
819311 2023-08-10T09:17:57 Z AdamGS Mergers (JOI19_mergers) C++17
100 / 100
 804 ms 104040 KB 
#include<bits/stdc++.h>
using namespace std;
typedef long long ll;
#define rep(a, b) for(int a = 0; a < (b); ++a)
#define st first
#define nd second
#define pb push_back
#define all(a) a.begin(), a.end()
const int LIM=5e5+7;
vector<int>V[LIM], P[LIM];
int T[LIM], odl[LIM], F[LIM], oc[LIM], deg[LIM];
void DFS(int x, int o) {
	for(auto i : V[x]) if(i!=o) {
		odl[i]=odl[x]+1;
		oc[i]=x;
		DFS(i, x);
	}
}
int fnd(int x) {
	if(F[x]==x) return x;
	return F[x]=fnd(F[x]);
}
void uni(int a, int b) {
	if(fnd(a)==fnd(b)) return;
	F[fnd(b)]=fnd(a);
}
int main() {
	ios_base::sync_with_stdio(0); cin.tie(0);
	int n, k;
	cin >> n >> k;
	rep(i, n-1) {
		int a, b;
		cin >> a >> b; --a; --b;
		V[a].pb(b);
		V[b].pb(a);
	}
	DFS(0, 0);
	rep(i, n) {
		cin >> T[i]; --T[i];
		P[T[i]].pb(i);
		F[i]=i;
	}
	rep(i, k) {
		set<pair<int,int>>S;
		for(auto j : P[i]) S.insert({odl[fnd(j)], fnd(j)});
		while(S.size()>1) {
			auto it=S.end(); --it;
			auto p=*it;
			S.erase(it);
			uni(oc[p.nd], p.nd);
			S.insert({odl[fnd(p.nd)], fnd(p.nd)});
		}
	}
	rep(i, n) for(auto j : V[i]) if(fnd(i)!=fnd(j)) ++deg[fnd(j)];
	int ans=0;
	rep(i, n) if(deg[i]==1) ++ans;
	cout << (ans+1)/2 << '\n';
}

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 12 ms 23764 KB Output is correct
2 Correct 12 ms 23812 KB Output is correct
3 Correct 11 ms 23764 KB Output is correct
4 Correct 10 ms 23812 KB Output is correct
5 Correct 11 ms 23816 KB Output is correct
6 Correct 11 ms 23764 KB Output is correct
7 Correct 11 ms 23820 KB Output is correct
8 Correct 11 ms 23728 KB Output is correct
9 Correct 11 ms 23784 KB Output is correct
10 Correct 11 ms 23820 KB Output is correct
11 Correct 11 ms 23816 KB Output is correct
12 Correct 11 ms 23816 KB Output is correct
13 Correct 11 ms 23812 KB Output is correct
14 Correct 11 ms 23764 KB Output is correct
15 Correct 11 ms 23764 KB Output is correct
16 Correct 11 ms 23776 KB Output is correct
17 Correct 11 ms 23832 KB Output is correct
18 Correct 12 ms 23844 KB Output is correct
19 Correct 11 ms 23764 KB Output is correct
20 Correct 11 ms 23764 KB Output is correct
21 Correct 12 ms 23820 KB Output is correct
22 Correct 11 ms 23764 KB Output is correct
23 Correct 11 ms 23816 KB Output is correct
24 Correct 12 ms 23816 KB Output is correct

Subtask #2
24.0 / 24.0

# Verdict Execution time Memory Grader output
1 Correct 12 ms 23764 KB Output is correct
2 Correct 12 ms 23812 KB Output is correct
3 Correct 11 ms 23764 KB Output is correct
4 Correct 10 ms 23812 KB Output is correct
5 Correct 11 ms 23816 KB Output is correct
6 Correct 11 ms 23764 KB Output is correct
7 Correct 11 ms 23820 KB Output is correct
8 Correct 11 ms 23728 KB Output is correct
9 Correct 11 ms 23784 KB Output is correct
10 Correct 11 ms 23820 KB Output is correct
11 Correct 11 ms 23816 KB Output is correct
12 Correct 11 ms 23816 KB Output is correct
13 Correct 11 ms 23812 KB Output is correct
14 Correct 11 ms 23764 KB Output is correct
15 Correct 11 ms 23764 KB Output is correct
16 Correct 11 ms 23776 KB Output is correct
17 Correct 11 ms 23832 KB Output is correct
18 Correct 12 ms 23844 KB Output is correct
19 Correct 11 ms 23764 KB Output is correct
20 Correct 11 ms 23764 KB Output is correct
21 Correct 12 ms 23820 KB Output is correct
22 Correct 11 ms 23764 KB Output is correct
23 Correct 11 ms 23816 KB Output is correct
24 Correct 12 ms 23816 KB Output is correct
25 Correct 13 ms 23820 KB Output is correct
26 Correct 12 ms 24060 KB Output is correct
27 Correct 12 ms 23988 KB Output is correct
28 Correct 13 ms 24204 KB Output is correct
29 Correct 12 ms 24148 KB Output is correct
30 Correct 14 ms 24004 KB Output is correct
31 Correct 14 ms 23892 KB Output is correct
32 Correct 13 ms 24148 KB Output is correct
33 Correct 12 ms 23792 KB Output is correct
34 Correct 13 ms 23972 KB Output is correct
35 Correct 14 ms 24080 KB Output is correct
36 Correct 13 ms 23992 KB Output is correct
37 Correct 12 ms 24048 KB Output is correct
38 Correct 11 ms 23812 KB Output is correct
39 Correct 12 ms 24020 KB Output is correct
40 Correct 13 ms 24080 KB Output is correct
41 Correct 15 ms 24020 KB Output is correct
42 Correct 13 ms 24080 KB Output is correct
43 Correct 12 ms 24296 KB Output is correct
44 Correct 11 ms 23748 KB Output is correct
45 Correct 13 ms 24100 KB Output is correct
46 Correct 12 ms 24072 KB Output is correct
47 Correct 12 ms 23816 KB Output is correct
48 Correct 13 ms 23956 KB Output is correct
49 Correct 13 ms 24036 KB Output is correct
50 Correct 12 ms 24080 KB Output is correct
51 Correct 13 ms 23992 KB Output is correct
52 Correct 13 ms 23952 KB Output is correct
53 Correct 12 ms 24088 KB Output is correct
54 Correct 12 ms 23960 KB Output is correct

Subtask #3
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 12 ms 23764 KB Output is correct
2 Correct 12 ms 23812 KB Output is correct
3 Correct 11 ms 23764 KB Output is correct
4 Correct 10 ms 23812 KB Output is correct
5 Correct 11 ms 23816 KB Output is correct
6 Correct 11 ms 23764 KB Output is correct
7 Correct 11 ms 23820 KB Output is correct
8 Correct 11 ms 23728 KB Output is correct
9 Correct 11 ms 23784 KB Output is correct
10 Correct 11 ms 23820 KB Output is correct
11 Correct 11 ms 23816 KB Output is correct
12 Correct 11 ms 23816 KB Output is correct
13 Correct 11 ms 23812 KB Output is correct
14 Correct 11 ms 23764 KB Output is correct
15 Correct 11 ms 23764 KB Output is correct
16 Correct 11 ms 23776 KB Output is correct
17 Correct 11 ms 23832 KB Output is correct
18 Correct 12 ms 23844 KB Output is correct
19 Correct 11 ms 23764 KB Output is correct
20 Correct 11 ms 23764 KB Output is correct
21 Correct 12 ms 23820 KB Output is correct
22 Correct 11 ms 23764 KB Output is correct
23 Correct 11 ms 23816 KB Output is correct
24 Correct 12 ms 23816 KB Output is correct
25 Correct 11 ms 23764 KB Output is correct
26 Correct 49 ms 30916 KB Output is correct
27 Correct 65 ms 30524 KB Output is correct
28 Correct 13 ms 24020 KB Output is correct
29 Correct 11 ms 23764 KB Output is correct
30 Correct 13 ms 23812 KB Output is correct
31 Correct 67 ms 30744 KB Output is correct
32 Correct 16 ms 24084 KB Output is correct
33 Correct 57 ms 36220 KB Output is correct
34 Correct 65 ms 30644 KB Output is correct
35 Correct 13 ms 24020 KB Output is correct
36 Correct 67 ms 31264 KB Output is correct
37 Correct 13 ms 24152 KB Output is correct
38 Correct 13 ms 24084 KB Output is correct
39 Correct 52 ms 30804 KB Output is correct
40 Correct 13 ms 24356 KB Output is correct
41 Correct 83 ms 35036 KB Output is correct
42 Correct 59 ms 32384 KB Output is correct
43 Correct 12 ms 23764 KB Output is correct
44 Correct 91 ms 40944 KB Output is correct
45 Correct 62 ms 33504 KB Output is correct
46 Correct 12 ms 24020 KB Output is correct
47 Correct 13 ms 23992 KB Output is correct

Subtask #4
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 60 ms 30928 KB Output is correct
2 Correct 52 ms 34116 KB Output is correct
3 Correct 12 ms 24104 KB Output is correct
4 Correct 12 ms 24068 KB Output is correct
5 Correct 10 ms 23812 KB Output is correct
6 Correct 11 ms 23812 KB Output is correct
7 Correct 11 ms 24020 KB Output is correct
8 Correct 64 ms 32308 KB Output is correct
9 Correct 13 ms 24020 KB Output is correct
10 Correct 67 ms 31012 KB Output is correct
11 Correct 11 ms 23764 KB Output is correct
12 Correct 66 ms 30996 KB Output is correct
13 Correct 80 ms 32316 KB Output is correct
14 Correct 62 ms 33880 KB Output is correct
15 Correct 51 ms 30856 KB Output is correct
16 Correct 13 ms 24008 KB Output is correct
17 Correct 11 ms 23732 KB Output is correct
18 Correct 55 ms 33860 KB Output is correct
19 Correct 63 ms 36920 KB Output is correct
20 Correct 13 ms 24020 KB Output is correct
21 Correct 11 ms 23764 KB Output is correct
22 Correct 53 ms 32456 KB Output is correct
23 Correct 13 ms 24020 KB Output is correct
24 Correct 74 ms 31496 KB Output is correct
25 Correct 61 ms 35852 KB Output is correct
26 Correct 12 ms 24148 KB Output is correct
27 Correct 12 ms 24148 KB Output is correct
28 Correct 12 ms 24020 KB Output is correct
29 Correct 12 ms 23960 KB Output is correct
30 Correct 12 ms 24016 KB Output is correct

Subtask #5
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 12 ms 23764 KB Output is correct
2 Correct 12 ms 23812 KB Output is correct
3 Correct 11 ms 23764 KB Output is correct
4 Correct 10 ms 23812 KB Output is correct
5 Correct 11 ms 23816 KB Output is correct
6 Correct 11 ms 23764 KB Output is correct
7 Correct 11 ms 23820 KB Output is correct
8 Correct 11 ms 23728 KB Output is correct
9 Correct 11 ms 23784 KB Output is correct
10 Correct 11 ms 23820 KB Output is correct
11 Correct 11 ms 23816 KB Output is correct
12 Correct 11 ms 23816 KB Output is correct
13 Correct 11 ms 23812 KB Output is correct
14 Correct 11 ms 23764 KB Output is correct
15 Correct 11 ms 23764 KB Output is correct
16 Correct 11 ms 23776 KB Output is correct
17 Correct 11 ms 23832 KB Output is correct
18 Correct 12 ms 23844 KB Output is correct
19 Correct 11 ms 23764 KB Output is correct
20 Correct 11 ms 23764 KB Output is correct
21 Correct 12 ms 23820 KB Output is correct
22 Correct 11 ms 23764 KB Output is correct
23 Correct 11 ms 23816 KB Output is correct
24 Correct 12 ms 23816 KB Output is correct
25 Correct 13 ms 23820 KB Output is correct
26 Correct 12 ms 24060 KB Output is correct
27 Correct 12 ms 23988 KB Output is correct
28 Correct 13 ms 24204 KB Output is correct
29 Correct 12 ms 24148 KB Output is correct
30 Correct 14 ms 24004 KB Output is correct
31 Correct 14 ms 23892 KB Output is correct
32 Correct 13 ms 24148 KB Output is correct
33 Correct 12 ms 23792 KB Output is correct
34 Correct 13 ms 23972 KB Output is correct
35 Correct 14 ms 24080 KB Output is correct
36 Correct 13 ms 23992 KB Output is correct
37 Correct 12 ms 24048 KB Output is correct
38 Correct 11 ms 23812 KB Output is correct
39 Correct 12 ms 24020 KB Output is correct
40 Correct 13 ms 24080 KB Output is correct
41 Correct 15 ms 24020 KB Output is correct
42 Correct 13 ms 24080 KB Output is correct
43 Correct 12 ms 24296 KB Output is correct
44 Correct 11 ms 23748 KB Output is correct
45 Correct 13 ms 24100 KB Output is correct
46 Correct 12 ms 24072 KB Output is correct
47 Correct 12 ms 23816 KB Output is correct
48 Correct 13 ms 23956 KB Output is correct
49 Correct 13 ms 24036 KB Output is correct
50 Correct 12 ms 24080 KB Output is correct
51 Correct 13 ms 23992 KB Output is correct
52 Correct 13 ms 23952 KB Output is correct
53 Correct 12 ms 24088 KB Output is correct
54 Correct 12 ms 23960 KB Output is correct
55 Correct 11 ms 23764 KB Output is correct
56 Correct 49 ms 30916 KB Output is correct
57 Correct 65 ms 30524 KB Output is correct
58 Correct 13 ms 24020 KB Output is correct
59 Correct 11 ms 23764 KB Output is correct
60 Correct 13 ms 23812 KB Output is correct
61 Correct 67 ms 30744 KB Output is correct
62 Correct 16 ms 24084 KB Output is correct
63 Correct 57 ms 36220 KB Output is correct
64 Correct 65 ms 30644 KB Output is correct
65 Correct 13 ms 24020 KB Output is correct
66 Correct 67 ms 31264 KB Output is correct
67 Correct 13 ms 24152 KB Output is correct
68 Correct 13 ms 24084 KB Output is correct
69 Correct 52 ms 30804 KB Output is correct
70 Correct 13 ms 24356 KB Output is correct
71 Correct 83 ms 35036 KB Output is correct
72 Correct 59 ms 32384 KB Output is correct
73 Correct 12 ms 23764 KB Output is correct
74 Correct 91 ms 40944 KB Output is correct
75 Correct 62 ms 33504 KB Output is correct
76 Correct 12 ms 24020 KB Output is correct
77 Correct 13 ms 23992 KB Output is correct
78 Correct 60 ms 30928 KB Output is correct
79 Correct 52 ms 34116 KB Output is correct
80 Correct 12 ms 24104 KB Output is correct
81 Correct 12 ms 24068 KB Output is correct
82 Correct 10 ms 23812 KB Output is correct
83 Correct 11 ms 23812 KB Output is correct
84 Correct 11 ms 24020 KB Output is correct
85 Correct 64 ms 32308 KB Output is correct
86 Correct 13 ms 24020 KB Output is correct
87 Correct 67 ms 31012 KB Output is correct
88 Correct 11 ms 23764 KB Output is correct
89 Correct 66 ms 30996 KB Output is correct
90 Correct 80 ms 32316 KB Output is correct
91 Correct 62 ms 33880 KB Output is correct
92 Correct 51 ms 30856 KB Output is correct
93 Correct 13 ms 24008 KB Output is correct
94 Correct 11 ms 23732 KB Output is correct
95 Correct 55 ms 33860 KB Output is correct
96 Correct 63 ms 36920 KB Output is correct
97 Correct 13 ms 24020 KB Output is correct
98 Correct 11 ms 23764 KB Output is correct
99 Correct 53 ms 32456 KB Output is correct
100 Correct 13 ms 24020 KB Output is correct
101 Correct 74 ms 31496 KB Output is correct
102 Correct 61 ms 35852 KB Output is correct
103 Correct 12 ms 24148 KB Output is correct
104 Correct 12 ms 24148 KB Output is correct
105 Correct 12 ms 24020 KB Output is correct
106 Correct 12 ms 23960 KB Output is correct
107 Correct 12 ms 24016 KB Output is correct
108 Correct 383 ms 67448 KB Output is correct
109 Correct 683 ms 83424 KB Output is correct
110 Correct 804 ms 104040 KB Output is correct
111 Correct 712 ms 93716 KB Output is correct
112 Correct 747 ms 85864 KB Output is correct
113 Correct 489 ms 75296 KB Output is correct
114 Correct 796 ms 69144 KB Output is correct
115 Correct 802 ms 80840 KB Output is correct
116 Correct 593 ms 63888 KB Output is correct
117 Correct 736 ms 75356 KB Output is correct
118 Correct 564 ms 60364 KB Output is correct
119 Correct 619 ms 75332 KB Output is correct
120 Correct 634 ms 86376 KB Output is correct
121 Correct 581 ms 75368 KB Output is correct
122 Correct 652 ms 69052 KB Output is correct
123 Correct 503 ms 76836 KB Output is correct
124 Correct 691 ms 74128 KB Output is correct