답안 #411393

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
411393	2021-05-25T07:45:21 Z	amoo_safar	Mergers (JOI19_mergers)	C++17	70 / 100	155 ms	19580 KB

mergers

// vaziat meshki-ghermeze !
#include <bits/stdc++.h>

#define pb push_back
#define F first
#define S second
#define all(x) x.begin(), x.end()
#define debug(x) cerr << #x << " : " << x << '\n'

using namespace std;

typedef long long ll;
typedef long double ld;
typedef string str;
typedef pair<ll, ll> pll;

const ll Mod = 1000000007LL;
const int N = 2e5 + 10;
const ll Inf = 2242545357980376863LL;
const ll Log = 30;

int dep[N], par[N], anc[N];
vector<int> G[N];
void DFS(int u, int p, int d){
	dep[u] = d;
	anc[u] = p;
	for(auto adj : G[u])
		if(adj != p)
			DFS(adj, u, d + 1);
}

int Find(int u){
	if(par[u] == u) return u;
	return par[u] = Find(par[u]);
}
void Unite(int u, int v){
	u = Find(u);
	v = Find(v);
	par[u] = v;
}

void Merge(int u, int v){
	// cerr << "!! " << u << ' ' << v << '\n';
	while((u = Find(u)) != (v = Find(v))){
		if(dep[u] < dep[v]) swap(u, v);
		Unite(u, anc[u]);
	}
}
int la[N];

int main(){
	ios::sync_with_stdio(0); cin.tie(0); cout.tie(0);
	iota(par, par + N, 0);
	int n, k;
	cin >> n >> k;
	int u, v;
	vector<pll> E;
	for(int i = 1; i < n; i++){
		cin >> u >> v;
		G[u].pb(v);
		G[v].pb(u);
		E.pb({u, v});
	}
	DFS(u, 0, 1);
	int s;
	for(int i = 1; i <= n; i++){
		cin >> s;
		if(la[s]) Merge(la[s], i);
		la[s] = i;
	}
	map<int, int> deg;
	for(auto [u, v] : E)
		if(Find(u) != Find(v))
			deg[Find(u)] ++, deg[Find(v)] ++;
	int cnt = 0;
	for(auto [u, d] : deg) cnt += (d == 1);
	// debug(cnt);
	cout << (cnt + 1) / 2 << '\n';
	return 0;
}

Subtask #1
10.0 / 10.0

#	결과	실행 시간	메모리	Grader output
1	Correct	4 ms	5708 KB	Output is correct
2	Correct	4 ms	5708 KB	Output is correct
3	Correct	5 ms	5808 KB	Output is correct
4	Correct	4 ms	5816 KB	Output is correct
5	Correct	4 ms	5708 KB	Output is correct
6	Correct	4 ms	5708 KB	Output is correct
7	Correct	4 ms	5708 KB	Output is correct
8	Correct	4 ms	5708 KB	Output is correct
9	Correct	4 ms	5708 KB	Output is correct
10	Correct	4 ms	5708 KB	Output is correct
11	Correct	4 ms	5708 KB	Output is correct
12	Correct	4 ms	5708 KB	Output is correct
13	Correct	4 ms	5804 KB	Output is correct
14	Correct	4 ms	5716 KB	Output is correct
15	Correct	4 ms	5708 KB	Output is correct
16	Correct	4 ms	5740 KB	Output is correct
17	Correct	4 ms	5804 KB	Output is correct
18	Correct	4 ms	5812 KB	Output is correct
19	Correct	4 ms	5708 KB	Output is correct
20	Correct	5 ms	5708 KB	Output is correct
21	Correct	4 ms	5836 KB	Output is correct
22	Correct	4 ms	5816 KB	Output is correct
23	Correct	4 ms	5808 KB	Output is correct
24	Correct	4 ms	5708 KB	Output is correct

Subtask #2
24.0 / 24.0

#	결과	실행 시간	메모리	Grader output
1	Correct	4 ms	5708 KB	Output is correct
2	Correct	4 ms	5708 KB	Output is correct
3	Correct	5 ms	5808 KB	Output is correct
4	Correct	4 ms	5816 KB	Output is correct
5	Correct	4 ms	5708 KB	Output is correct
6	Correct	4 ms	5708 KB	Output is correct
7	Correct	4 ms	5708 KB	Output is correct
8	Correct	4 ms	5708 KB	Output is correct
9	Correct	4 ms	5708 KB	Output is correct
10	Correct	4 ms	5708 KB	Output is correct
11	Correct	4 ms	5708 KB	Output is correct
12	Correct	4 ms	5708 KB	Output is correct
13	Correct	4 ms	5804 KB	Output is correct
14	Correct	4 ms	5716 KB	Output is correct
15	Correct	4 ms	5708 KB	Output is correct
16	Correct	4 ms	5740 KB	Output is correct
17	Correct	4 ms	5804 KB	Output is correct
18	Correct	4 ms	5812 KB	Output is correct
19	Correct	4 ms	5708 KB	Output is correct
20	Correct	5 ms	5708 KB	Output is correct
21	Correct	4 ms	5836 KB	Output is correct
22	Correct	4 ms	5816 KB	Output is correct
23	Correct	4 ms	5808 KB	Output is correct
24	Correct	4 ms	5708 KB	Output is correct
25	Correct	4 ms	5812 KB	Output is correct
26	Correct	6 ms	6072 KB	Output is correct
27	Correct	5 ms	5952 KB	Output is correct
28	Correct	6 ms	6092 KB	Output is correct
29	Correct	7 ms	6092 KB	Output is correct
30	Correct	5 ms	5964 KB	Output is correct
31	Correct	4 ms	5708 KB	Output is correct
32	Correct	6 ms	6092 KB	Output is correct
33	Correct	5 ms	5708 KB	Output is correct
34	Correct	6 ms	5964 KB	Output is correct
35	Correct	8 ms	6092 KB	Output is correct
36	Correct	6 ms	5964 KB	Output is correct
37	Correct	7 ms	5964 KB	Output is correct
38	Correct	4 ms	5708 KB	Output is correct
39	Correct	6 ms	5964 KB	Output is correct
40	Correct	5 ms	5952 KB	Output is correct
41	Correct	6 ms	5952 KB	Output is correct
42	Correct	5 ms	5964 KB	Output is correct
43	Correct	6 ms	6092 KB	Output is correct
44	Correct	4 ms	5820 KB	Output is correct
45	Correct	5 ms	5964 KB	Output is correct
46	Correct	6 ms	5952 KB	Output is correct
47	Correct	4 ms	5708 KB	Output is correct
48	Correct	6 ms	5936 KB	Output is correct
49	Correct	7 ms	6076 KB	Output is correct
50	Correct	7 ms	6120 KB	Output is correct
51	Correct	7 ms	5964 KB	Output is correct
52	Correct	7 ms	5952 KB	Output is correct
53	Correct	5 ms	5964 KB	Output is correct
54	Correct	7 ms	5964 KB	Output is correct

Subtask #3
14.0 / 14.0

#	결과	실행 시간	메모리	Grader output
1	Correct	4 ms	5708 KB	Output is correct
2	Correct	4 ms	5708 KB	Output is correct
3	Correct	5 ms	5808 KB	Output is correct
4	Correct	4 ms	5816 KB	Output is correct
5	Correct	4 ms	5708 KB	Output is correct
6	Correct	4 ms	5708 KB	Output is correct
7	Correct	4 ms	5708 KB	Output is correct
8	Correct	4 ms	5708 KB	Output is correct
9	Correct	4 ms	5708 KB	Output is correct
10	Correct	4 ms	5708 KB	Output is correct
11	Correct	4 ms	5708 KB	Output is correct
12	Correct	4 ms	5708 KB	Output is correct
13	Correct	4 ms	5804 KB	Output is correct
14	Correct	4 ms	5716 KB	Output is correct
15	Correct	4 ms	5708 KB	Output is correct
16	Correct	4 ms	5740 KB	Output is correct
17	Correct	4 ms	5804 KB	Output is correct
18	Correct	4 ms	5812 KB	Output is correct
19	Correct	4 ms	5708 KB	Output is correct
20	Correct	5 ms	5708 KB	Output is correct
21	Correct	4 ms	5836 KB	Output is correct
22	Correct	4 ms	5816 KB	Output is correct
23	Correct	4 ms	5808 KB	Output is correct
24	Correct	4 ms	5708 KB	Output is correct
25	Correct	4 ms	5708 KB	Output is correct
26	Correct	53 ms	13100 KB	Output is correct
27	Correct	77 ms	12808 KB	Output is correct
28	Correct	5 ms	5964 KB	Output is correct
29	Correct	4 ms	5812 KB	Output is correct
30	Correct	4 ms	5708 KB	Output is correct
31	Correct	74 ms	12888 KB	Output is correct
32	Correct	5 ms	5964 KB	Output is correct
33	Correct	78 ms	14200 KB	Output is correct
34	Correct	66 ms	12788 KB	Output is correct
35	Correct	5 ms	5964 KB	Output is correct
36	Correct	79 ms	12896 KB	Output is correct
37	Correct	6 ms	5964 KB	Output is correct
38	Correct	6 ms	5932 KB	Output is correct
39	Correct	61 ms	13060 KB	Output is correct
40	Correct	5 ms	6100 KB	Output is correct
41	Correct	69 ms	12724 KB	Output is correct
42	Correct	69 ms	13960 KB	Output is correct
43	Correct	4 ms	5708 KB	Output is correct
44	Correct	79 ms	14420 KB	Output is correct
45	Correct	67 ms	13928 KB	Output is correct
46	Correct	5 ms	5956 KB	Output is correct
47	Correct	5 ms	5952 KB	Output is correct

Subtask #4
22.0 / 22.0

#	결과	실행 시간	메모리	Grader output
1	Correct	56 ms	13000 KB	Output is correct
2	Correct	111 ms	18552 KB	Output is correct
3	Correct	6 ms	6092 KB	Output is correct
4	Correct	5 ms	5964 KB	Output is correct
5	Correct	4 ms	5708 KB	Output is correct
6	Correct	4 ms	5808 KB	Output is correct
7	Correct	5 ms	5964 KB	Output is correct
8	Correct	83 ms	13684 KB	Output is correct
9	Correct	6 ms	5924 KB	Output is correct
10	Correct	74 ms	12904 KB	Output is correct
11	Correct	4 ms	5708 KB	Output is correct
12	Correct	92 ms	12840 KB	Output is correct
13	Correct	83 ms	14156 KB	Output is correct
14	Correct	128 ms	18120 KB	Output is correct
15	Correct	54 ms	12976 KB	Output is correct
16	Correct	7 ms	5948 KB	Output is correct
17	Correct	4 ms	5708 KB	Output is correct
18	Correct	100 ms	17472 KB	Output is correct
19	Correct	138 ms	19580 KB	Output is correct
20	Correct	6 ms	5952 KB	Output is correct
21	Correct	4 ms	5708 KB	Output is correct
22	Correct	63 ms	14312 KB	Output is correct
23	Correct	6 ms	5964 KB	Output is correct
24	Correct	76 ms	13344 KB	Output is correct
25	Correct	155 ms	18684 KB	Output is correct
26	Correct	6 ms	6092 KB	Output is correct
27	Correct	6 ms	6216 KB	Output is correct
28	Correct	5 ms	5964 KB	Output is correct
29	Correct	5 ms	5964 KB	Output is correct
30	Correct	5 ms	5952 KB	Output is correct

Subtask #5
0 / 30.0

#	결과	실행 시간	메모리	Grader output
1	Correct	4 ms	5708 KB	Output is correct
2	Correct	4 ms	5708 KB	Output is correct
3	Correct	5 ms	5808 KB	Output is correct
4	Correct	4 ms	5816 KB	Output is correct
5	Correct	4 ms	5708 KB	Output is correct
6	Correct	4 ms	5708 KB	Output is correct
7	Correct	4 ms	5708 KB	Output is correct
8	Correct	4 ms	5708 KB	Output is correct
9	Correct	4 ms	5708 KB	Output is correct
10	Correct	4 ms	5708 KB	Output is correct
11	Correct	4 ms	5708 KB	Output is correct
12	Correct	4 ms	5708 KB	Output is correct
13	Correct	4 ms	5804 KB	Output is correct
14	Correct	4 ms	5716 KB	Output is correct
15	Correct	4 ms	5708 KB	Output is correct
16	Correct	4 ms	5740 KB	Output is correct
17	Correct	4 ms	5804 KB	Output is correct
18	Correct	4 ms	5812 KB	Output is correct
19	Correct	4 ms	5708 KB	Output is correct
20	Correct	5 ms	5708 KB	Output is correct
21	Correct	4 ms	5836 KB	Output is correct
22	Correct	4 ms	5816 KB	Output is correct
23	Correct	4 ms	5808 KB	Output is correct
24	Correct	4 ms	5708 KB	Output is correct
25	Correct	4 ms	5812 KB	Output is correct
26	Correct	6 ms	6072 KB	Output is correct
27	Correct	5 ms	5952 KB	Output is correct
28	Correct	6 ms	6092 KB	Output is correct
29	Correct	7 ms	6092 KB	Output is correct
30	Correct	5 ms	5964 KB	Output is correct
31	Correct	4 ms	5708 KB	Output is correct
32	Correct	6 ms	6092 KB	Output is correct
33	Correct	5 ms	5708 KB	Output is correct
34	Correct	6 ms	5964 KB	Output is correct
35	Correct	8 ms	6092 KB	Output is correct
36	Correct	6 ms	5964 KB	Output is correct
37	Correct	7 ms	5964 KB	Output is correct
38	Correct	4 ms	5708 KB	Output is correct
39	Correct	6 ms	5964 KB	Output is correct
40	Correct	5 ms	5952 KB	Output is correct
41	Correct	6 ms	5952 KB	Output is correct
42	Correct	5 ms	5964 KB	Output is correct
43	Correct	6 ms	6092 KB	Output is correct
44	Correct	4 ms	5820 KB	Output is correct
45	Correct	5 ms	5964 KB	Output is correct
46	Correct	6 ms	5952 KB	Output is correct
47	Correct	4 ms	5708 KB	Output is correct
48	Correct	6 ms	5936 KB	Output is correct
49	Correct	7 ms	6076 KB	Output is correct
50	Correct	7 ms	6120 KB	Output is correct
51	Correct	7 ms	5964 KB	Output is correct
52	Correct	7 ms	5952 KB	Output is correct
53	Correct	5 ms	5964 KB	Output is correct
54	Correct	7 ms	5964 KB	Output is correct
55	Correct	4 ms	5708 KB	Output is correct
56	Correct	53 ms	13100 KB	Output is correct
57	Correct	77 ms	12808 KB	Output is correct
58	Correct	5 ms	5964 KB	Output is correct
59	Correct	4 ms	5812 KB	Output is correct
60	Correct	4 ms	5708 KB	Output is correct
61	Correct	74 ms	12888 KB	Output is correct
62	Correct	5 ms	5964 KB	Output is correct
63	Correct	78 ms	14200 KB	Output is correct
64	Correct	66 ms	12788 KB	Output is correct
65	Correct	5 ms	5964 KB	Output is correct
66	Correct	79 ms	12896 KB	Output is correct
67	Correct	6 ms	5964 KB	Output is correct
68	Correct	6 ms	5932 KB	Output is correct
69	Correct	61 ms	13060 KB	Output is correct
70	Correct	5 ms	6100 KB	Output is correct
71	Correct	69 ms	12724 KB	Output is correct
72	Correct	69 ms	13960 KB	Output is correct
73	Correct	4 ms	5708 KB	Output is correct
74	Correct	79 ms	14420 KB	Output is correct
75	Correct	67 ms	13928 KB	Output is correct
76	Correct	5 ms	5956 KB	Output is correct
77	Correct	5 ms	5952 KB	Output is correct
78	Correct	56 ms	13000 KB	Output is correct
79	Correct	111 ms	18552 KB	Output is correct
80	Correct	6 ms	6092 KB	Output is correct
81	Correct	5 ms	5964 KB	Output is correct
82	Correct	4 ms	5708 KB	Output is correct
83	Correct	4 ms	5808 KB	Output is correct
84	Correct	5 ms	5964 KB	Output is correct
85	Correct	83 ms	13684 KB	Output is correct
86	Correct	6 ms	5924 KB	Output is correct
87	Correct	74 ms	12904 KB	Output is correct
88	Correct	4 ms	5708 KB	Output is correct
89	Correct	92 ms	12840 KB	Output is correct
90	Correct	83 ms	14156 KB	Output is correct
91	Correct	128 ms	18120 KB	Output is correct
92	Correct	54 ms	12976 KB	Output is correct
93	Correct	7 ms	5948 KB	Output is correct
94	Correct	4 ms	5708 KB	Output is correct
95	Correct	100 ms	17472 KB	Output is correct
96	Correct	138 ms	19580 KB	Output is correct
97	Correct	6 ms	5952 KB	Output is correct
98	Correct	4 ms	5708 KB	Output is correct
99	Correct	63 ms	14312 KB	Output is correct
100	Correct	6 ms	5964 KB	Output is correct
101	Correct	76 ms	13344 KB	Output is correct
102	Correct	155 ms	18684 KB	Output is correct
103	Correct	6 ms	6092 KB	Output is correct
104	Correct	6 ms	6216 KB	Output is correct
105	Correct	5 ms	5964 KB	Output is correct
106	Correct	5 ms	5964 KB	Output is correct
107	Correct	5 ms	5952 KB	Output is correct
108	Runtime error	10 ms	11500 KB	Execution killed with signal 11
109	Halted	0 ms	0 KB	-

답안 #411393

Compilation message

Subtask #1 10.0 / 10.0

Subtask #2 24.0 / 24.0

Subtask #3 14.0 / 14.0

Subtask #4 22.0 / 22.0

Subtask #5 0 / 30.0

Subtask #1
10.0 / 10.0

Subtask #2
24.0 / 24.0

Subtask #3
14.0 / 14.0

Subtask #4
22.0 / 22.0

Subtask #5
0 / 30.0