답안 #379818

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
379818	2021-03-19T11:15:57 Z	cgiosy	Mergers (JOI19_mergers)	C++17	100 / 100	799 ms	78956 KB

mergers

#include <bits/stdc++.h>
using namespace std;

int main() {
	ios::sync_with_stdio(0);cin.tie(0);
	int N, M, ans=0, t=0;
	cin>>N>>M;
	if(N<3) { cout<<M-1<<'\n'; return 0; }

	vector<int> C(N), L(M), R(M);
	vector<vector<int>> G(N);
	for(int i=1; i<N; i++) {
		int x, y;
		cin>>x>>y; --x, --y;
		G[x].push_back(y);
		G[y].push_back(x);
	}
	for(int i=0; i<N; i++) cin>>C[i], --C[i];

	function<void(int, int)> f=[&](int i, int p) {
		++t;
		L[C[i]]=L[C[i]]?:t;
		for(int j:G[i]) if(j!=p) f(j, i);
		R[C[i]]=t;
	};
	f(0, 0);

	t=0;
	function<tuple<int, int, int>(int, int)> g=[&](int i, int p) {
		++t;
		int a=L[C[i]], b=R[C[i]], x=0, s=t;
		for(int j:G[i]) if(j!=p) {
			auto[c,d,y]=g(j, i);
			a=min(a, c);
			b=max(b, d);
			x+=y;
		}
		if(s==a && b==t && i) ans+=!x, x=1;
		return make_tuple(a, b, x);
	};
	int r=get<2>(g(0, 0))==1;
	cout<<(ans+r+1)/2<<'\n';
}

Subtask #1
10.0 / 10.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	364 KB	Output is correct
2	Correct	1 ms	364 KB	Output is correct
3	Correct	1 ms	364 KB	Output is correct
4	Correct	0 ms	364 KB	Output is correct
5	Correct	0 ms	364 KB	Output is correct
6	Correct	1 ms	364 KB	Output is correct
7	Correct	1 ms	364 KB	Output is correct
8	Correct	1 ms	364 KB	Output is correct
9	Correct	1 ms	384 KB	Output is correct
10	Correct	1 ms	384 KB	Output is correct
11	Correct	1 ms	364 KB	Output is correct
12	Correct	1 ms	364 KB	Output is correct
13	Correct	0 ms	364 KB	Output is correct
14	Correct	1 ms	364 KB	Output is correct
15	Correct	1 ms	364 KB	Output is correct
16	Correct	0 ms	364 KB	Output is correct
17	Correct	1 ms	364 KB	Output is correct
18	Correct	1 ms	364 KB	Output is correct
19	Correct	1 ms	384 KB	Output is correct
20	Correct	1 ms	364 KB	Output is correct
21	Correct	1 ms	364 KB	Output is correct
22	Correct	1 ms	364 KB	Output is correct
23	Correct	1 ms	364 KB	Output is correct
24	Correct	1 ms	492 KB	Output is correct

Subtask #2
24.0 / 24.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	364 KB	Output is correct
2	Correct	1 ms	364 KB	Output is correct
3	Correct	1 ms	364 KB	Output is correct
4	Correct	0 ms	364 KB	Output is correct
5	Correct	0 ms	364 KB	Output is correct
6	Correct	1 ms	364 KB	Output is correct
7	Correct	1 ms	364 KB	Output is correct
8	Correct	1 ms	364 KB	Output is correct
9	Correct	1 ms	384 KB	Output is correct
10	Correct	1 ms	384 KB	Output is correct
11	Correct	1 ms	364 KB	Output is correct
12	Correct	1 ms	364 KB	Output is correct
13	Correct	0 ms	364 KB	Output is correct
14	Correct	1 ms	364 KB	Output is correct
15	Correct	1 ms	364 KB	Output is correct
16	Correct	0 ms	364 KB	Output is correct
17	Correct	1 ms	364 KB	Output is correct
18	Correct	1 ms	364 KB	Output is correct
19	Correct	1 ms	384 KB	Output is correct
20	Correct	1 ms	364 KB	Output is correct
21	Correct	1 ms	364 KB	Output is correct
22	Correct	1 ms	364 KB	Output is correct
23	Correct	1 ms	364 KB	Output is correct
24	Correct	1 ms	492 KB	Output is correct
25	Correct	1 ms	364 KB	Output is correct
26	Correct	2 ms	620 KB	Output is correct
27	Correct	3 ms	620 KB	Output is correct
28	Correct	3 ms	768 KB	Output is correct
29	Correct	2 ms	620 KB	Output is correct
30	Correct	2 ms	492 KB	Output is correct
31	Correct	1 ms	384 KB	Output is correct
32	Correct	3 ms	876 KB	Output is correct
33	Correct	1 ms	364 KB	Output is correct
34	Correct	2 ms	620 KB	Output is correct
35	Correct	2 ms	620 KB	Output is correct
36	Correct	2 ms	492 KB	Output is correct
37	Correct	2 ms	620 KB	Output is correct
38	Correct	23 ms	364 KB	Output is correct
39	Correct	2 ms	620 KB	Output is correct
40	Correct	2 ms	492 KB	Output is correct
41	Correct	2 ms	492 KB	Output is correct
42	Correct	2 ms	620 KB	Output is correct
43	Correct	4 ms	876 KB	Output is correct
44	Correct	1 ms	364 KB	Output is correct
45	Correct	3 ms	620 KB	Output is correct
46	Correct	2 ms	620 KB	Output is correct
47	Correct	1 ms	384 KB	Output is correct
48	Correct	2 ms	620 KB	Output is correct
49	Correct	2 ms	620 KB	Output is correct
50	Correct	3 ms	620 KB	Output is correct
51	Correct	2 ms	620 KB	Output is correct
52	Correct	2 ms	620 KB	Output is correct
53	Correct	2 ms	620 KB	Output is correct
54	Correct	2 ms	492 KB	Output is correct

Subtask #3
14.0 / 14.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	364 KB	Output is correct
2	Correct	1 ms	364 KB	Output is correct
3	Correct	1 ms	364 KB	Output is correct
4	Correct	0 ms	364 KB	Output is correct
5	Correct	0 ms	364 KB	Output is correct
6	Correct	1 ms	364 KB	Output is correct
7	Correct	1 ms	364 KB	Output is correct
8	Correct	1 ms	364 KB	Output is correct
9	Correct	1 ms	384 KB	Output is correct
10	Correct	1 ms	384 KB	Output is correct
11	Correct	1 ms	364 KB	Output is correct
12	Correct	1 ms	364 KB	Output is correct
13	Correct	0 ms	364 KB	Output is correct
14	Correct	1 ms	364 KB	Output is correct
15	Correct	1 ms	364 KB	Output is correct
16	Correct	0 ms	364 KB	Output is correct
17	Correct	1 ms	364 KB	Output is correct
18	Correct	1 ms	364 KB	Output is correct
19	Correct	1 ms	384 KB	Output is correct
20	Correct	1 ms	364 KB	Output is correct
21	Correct	1 ms	364 KB	Output is correct
22	Correct	1 ms	364 KB	Output is correct
23	Correct	1 ms	364 KB	Output is correct
24	Correct	1 ms	492 KB	Output is correct
25	Correct	1 ms	364 KB	Output is correct
26	Correct	50 ms	7404 KB	Output is correct
27	Correct	73 ms	7148 KB	Output is correct
28	Correct	2 ms	620 KB	Output is correct
29	Correct	1 ms	364 KB	Output is correct
30	Correct	1 ms	364 KB	Output is correct
31	Correct	81 ms	7148 KB	Output is correct
32	Correct	2 ms	620 KB	Output is correct
33	Correct	115 ms	18924 KB	Output is correct
34	Correct	75 ms	7404 KB	Output is correct
35	Correct	2 ms	492 KB	Output is correct
36	Correct	80 ms	8544 KB	Output is correct
37	Correct	2 ms	492 KB	Output is correct
38	Correct	2 ms	492 KB	Output is correct
39	Correct	57 ms	7908 KB	Output is correct
40	Correct	2 ms	876 KB	Output is correct
41	Correct	107 ms	7532 KB	Output is correct
42	Correct	104 ms	11372 KB	Output is correct
43	Correct	1 ms	364 KB	Output is correct
44	Correct	98 ms	19564 KB	Output is correct
45	Correct	83 ms	13548 KB	Output is correct
46	Correct	2 ms	620 KB	Output is correct
47	Correct	2 ms	492 KB	Output is correct

Subtask #4
22.0 / 22.0

#	결과	실행 시간	메모리	Grader output
1	Correct	49 ms	7012 KB	Output is correct
2	Correct	61 ms	7908 KB	Output is correct
3	Correct	2 ms	620 KB	Output is correct
4	Correct	2 ms	620 KB	Output is correct
5	Correct	1 ms	364 KB	Output is correct
6	Correct	1 ms	364 KB	Output is correct
7	Correct	2 ms	620 KB	Output is correct
8	Correct	81 ms	7916 KB	Output is correct
9	Correct	2 ms	492 KB	Output is correct
10	Correct	98 ms	7276 KB	Output is correct
11	Correct	1 ms	364 KB	Output is correct
12	Correct	107 ms	7148 KB	Output is correct
13	Correct	84 ms	7532 KB	Output is correct
14	Correct	87 ms	8172 KB	Output is correct
15	Correct	50 ms	7524 KB	Output is correct
16	Correct	2 ms	620 KB	Output is correct
17	Correct	1 ms	364 KB	Output is correct
18	Correct	59 ms	8144 KB	Output is correct
19	Correct	99 ms	14316 KB	Output is correct
20	Correct	2 ms	620 KB	Output is correct
21	Correct	1 ms	364 KB	Output is correct
22	Correct	54 ms	7908 KB	Output is correct
23	Correct	2 ms	620 KB	Output is correct
24	Correct	92 ms	7276 KB	Output is correct
25	Correct	96 ms	12140 KB	Output is correct
26	Correct	3 ms	620 KB	Output is correct
27	Correct	2 ms	620 KB	Output is correct
28	Correct	2 ms	620 KB	Output is correct
29	Correct	2 ms	620 KB	Output is correct
30	Correct	2 ms	620 KB	Output is correct

Subtask #5
30.0 / 30.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	364 KB	Output is correct
2	Correct	1 ms	364 KB	Output is correct
3	Correct	1 ms	364 KB	Output is correct
4	Correct	0 ms	364 KB	Output is correct
5	Correct	0 ms	364 KB	Output is correct
6	Correct	1 ms	364 KB	Output is correct
7	Correct	1 ms	364 KB	Output is correct
8	Correct	1 ms	364 KB	Output is correct
9	Correct	1 ms	384 KB	Output is correct
10	Correct	1 ms	384 KB	Output is correct
11	Correct	1 ms	364 KB	Output is correct
12	Correct	1 ms	364 KB	Output is correct
13	Correct	0 ms	364 KB	Output is correct
14	Correct	1 ms	364 KB	Output is correct
15	Correct	1 ms	364 KB	Output is correct
16	Correct	0 ms	364 KB	Output is correct
17	Correct	1 ms	364 KB	Output is correct
18	Correct	1 ms	364 KB	Output is correct
19	Correct	1 ms	384 KB	Output is correct
20	Correct	1 ms	364 KB	Output is correct
21	Correct	1 ms	364 KB	Output is correct
22	Correct	1 ms	364 KB	Output is correct
23	Correct	1 ms	364 KB	Output is correct
24	Correct	1 ms	492 KB	Output is correct
25	Correct	1 ms	364 KB	Output is correct
26	Correct	2 ms	620 KB	Output is correct
27	Correct	3 ms	620 KB	Output is correct
28	Correct	3 ms	768 KB	Output is correct
29	Correct	2 ms	620 KB	Output is correct
30	Correct	2 ms	492 KB	Output is correct
31	Correct	1 ms	384 KB	Output is correct
32	Correct	3 ms	876 KB	Output is correct
33	Correct	1 ms	364 KB	Output is correct
34	Correct	2 ms	620 KB	Output is correct
35	Correct	2 ms	620 KB	Output is correct
36	Correct	2 ms	492 KB	Output is correct
37	Correct	2 ms	620 KB	Output is correct
38	Correct	23 ms	364 KB	Output is correct
39	Correct	2 ms	620 KB	Output is correct
40	Correct	2 ms	492 KB	Output is correct
41	Correct	2 ms	492 KB	Output is correct
42	Correct	2 ms	620 KB	Output is correct
43	Correct	4 ms	876 KB	Output is correct
44	Correct	1 ms	364 KB	Output is correct
45	Correct	3 ms	620 KB	Output is correct
46	Correct	2 ms	620 KB	Output is correct
47	Correct	1 ms	384 KB	Output is correct
48	Correct	2 ms	620 KB	Output is correct
49	Correct	2 ms	620 KB	Output is correct
50	Correct	3 ms	620 KB	Output is correct
51	Correct	2 ms	620 KB	Output is correct
52	Correct	2 ms	620 KB	Output is correct
53	Correct	2 ms	620 KB	Output is correct
54	Correct	2 ms	492 KB	Output is correct
55	Correct	1 ms	364 KB	Output is correct
56	Correct	50 ms	7404 KB	Output is correct
57	Correct	73 ms	7148 KB	Output is correct
58	Correct	2 ms	620 KB	Output is correct
59	Correct	1 ms	364 KB	Output is correct
60	Correct	1 ms	364 KB	Output is correct
61	Correct	81 ms	7148 KB	Output is correct
62	Correct	2 ms	620 KB	Output is correct
63	Correct	115 ms	18924 KB	Output is correct
64	Correct	75 ms	7404 KB	Output is correct
65	Correct	2 ms	492 KB	Output is correct
66	Correct	80 ms	8544 KB	Output is correct
67	Correct	2 ms	492 KB	Output is correct
68	Correct	2 ms	492 KB	Output is correct
69	Correct	57 ms	7908 KB	Output is correct
70	Correct	2 ms	876 KB	Output is correct
71	Correct	107 ms	7532 KB	Output is correct
72	Correct	104 ms	11372 KB	Output is correct
73	Correct	1 ms	364 KB	Output is correct
74	Correct	98 ms	19564 KB	Output is correct
75	Correct	83 ms	13548 KB	Output is correct
76	Correct	2 ms	620 KB	Output is correct
77	Correct	2 ms	492 KB	Output is correct
78	Correct	49 ms	7012 KB	Output is correct
79	Correct	61 ms	7908 KB	Output is correct
80	Correct	2 ms	620 KB	Output is correct
81	Correct	2 ms	620 KB	Output is correct
82	Correct	1 ms	364 KB	Output is correct
83	Correct	1 ms	364 KB	Output is correct
84	Correct	2 ms	620 KB	Output is correct
85	Correct	81 ms	7916 KB	Output is correct
86	Correct	2 ms	492 KB	Output is correct
87	Correct	98 ms	7276 KB	Output is correct
88	Correct	1 ms	364 KB	Output is correct
89	Correct	107 ms	7148 KB	Output is correct
90	Correct	84 ms	7532 KB	Output is correct
91	Correct	87 ms	8172 KB	Output is correct
92	Correct	50 ms	7524 KB	Output is correct
93	Correct	2 ms	620 KB	Output is correct
94	Correct	1 ms	364 KB	Output is correct
95	Correct	59 ms	8144 KB	Output is correct
96	Correct	99 ms	14316 KB	Output is correct
97	Correct	2 ms	620 KB	Output is correct
98	Correct	1 ms	364 KB	Output is correct
99	Correct	54 ms	7908 KB	Output is correct
100	Correct	2 ms	620 KB	Output is correct
101	Correct	92 ms	7276 KB	Output is correct
102	Correct	96 ms	12140 KB	Output is correct
103	Correct	3 ms	620 KB	Output is correct
104	Correct	2 ms	620 KB	Output is correct
105	Correct	2 ms	620 KB	Output is correct
106	Correct	2 ms	620 KB	Output is correct
107	Correct	2 ms	620 KB	Output is correct
108	Correct	419 ms	34780 KB	Output is correct
109	Correct	755 ms	60908 KB	Output is correct
110	Correct	766 ms	78956 KB	Output is correct
111	Correct	799 ms	72940 KB	Output is correct
112	Correct	733 ms	57324 KB	Output is correct
113	Correct	453 ms	36564 KB	Output is correct
114	Correct	650 ms	31724 KB	Output is correct
115	Correct	629 ms	31852 KB	Output is correct
116	Correct	673 ms	32784 KB	Output is correct
117	Correct	685 ms	35820 KB	Output is correct
118	Correct	634 ms	31340 KB	Output is correct
119	Correct	716 ms	35820 KB	Output is correct
120	Correct	773 ms	58604 KB	Output is correct
121	Correct	696 ms	35820 KB	Output is correct
122	Correct	683 ms	34284 KB	Output is correct
123	Correct	449 ms	37128 KB	Output is correct
124	Correct	724 ms	35192 KB	Output is correct

답안 #379818

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 30.0 / 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
30.0 / 30.0