답안 #138134

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
138134	2019-07-29T11:58:52 Z	Mahmoud_Adel	Mergers (JOI19_mergers)	C++14	70 / 100	970 ms	195784 KB

mergers

#include <bits/stdc++.h>
using namespace std;
#define f first
#define s second
typedef long long ll;
const int N = 5e5+5;
int n, m, ans, cur, s[N], dep[N], sp[N][20], sub[N], ret[N], mark[N], deg[N];
vector<int> adj[N], vec[N];
void pre(int u, int p)
{
	sub[u] = 1;
	dep[u] = dep[p]+1;
	sp[u][0] = p;
	for(int i=1; i<20; i++) sp[u][i] = sp[sp[u][i-1]][i-1];
	for(int v : adj[u]) if(v != p) pre(v, u), sub[u] += sub[v];	
}	
int equate(int u, int v)
{
	int c = dep[u]-dep[v];
	for(int i=0; i<20; i++) if(c & (1<<i)) u = sp[u][i];
	return u;
}
int LCA(int u, int v)
{
	if(dep[u] < dep[v]) swap(u, v);
	u = equate(u, v);
	if(u == v) return u;
	for(int i=19; i>=0; i--) if(sp[u][i] != sp[v][i]) u = sp[u][i], v = sp[v][i];
	return sp[u][0];
}
void calc(int u, int p)
{
	for(auto v : adj[u]) if(v != p) calc(v, u), ret[u] += ret[v];
	if(ret[u] == sub[u]) mark[u] = 1;
}
void DFS(int u, int p, int last)
{
	for(int v : adj[u]) if(p != v)
	{
		if(mark[v]) assert(mark[last]), deg[v]++, deg[last]++, DFS(v, u, v);
		else DFS(v, u, last);
	}
}
int main()
{
	scanf("%d %d", &n, &m);
	memset(sp, -1, sizeof sp);
	for(int i=1, a, b; i<n; i++) scanf("%d %d", &a, &b),
	adj[a].push_back(b), adj[b].push_back(a);
	for(int i=1; i<=n; i++) scanf("%d", &s[i]), vec[s[i]].push_back(i);
	pre(1, 0);
	for(int i=1; i<=m; i++) 
	{
		if(vec[i].empty()) continue;
		int node = vec[i][0];
		for(auto u : vec[i]) node = LCA(node, u);
		ret[node] += (int)vec[i].size();
	}
	calc(1, 0);
	DFS(1, 0, 1);
	for(int i=1; i<=n; i++) ans += (deg[i]==1);
	cout << (ans+1)/2 << endl;
}

Compilation message

mergers.cpp: In function 'int main()':
mergers.cpp:46:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d %d", &n, &m);
  ~~~~~^~~~~~~~~~~~~~~~~
mergers.cpp:49:21: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  for(int i=1, a, b; i<n; i++) scanf("%d %d", &a, &b),
                               ~~~~~~~~~~~~~~~~~~~~~~~~
  adj[a].push_back(b), adj[b].push_back(a);
  ~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~
mergers.cpp:50:44: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  for(int i=1; i<=n; i++) scanf("%d", &s[i]), vec[s[i]].push_back(i);
                          ~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
10.0 / 10.0

#	결과	실행 시간	메모리	Grader output
1	Correct	57 ms	62968 KB	Output is correct
2	Correct	57 ms	62968 KB	Output is correct
3	Correct	68 ms	62968 KB	Output is correct
4	Correct	69 ms	62940 KB	Output is correct
5	Correct	65 ms	63096 KB	Output is correct
6	Correct	191 ms	62968 KB	Output is correct
7	Correct	69 ms	62968 KB	Output is correct
8	Correct	67 ms	62968 KB	Output is correct
9	Correct	57 ms	62968 KB	Output is correct
10	Correct	67 ms	63024 KB	Output is correct
11	Correct	66 ms	62968 KB	Output is correct
12	Correct	67 ms	62940 KB	Output is correct
13	Correct	58 ms	62976 KB	Output is correct
14	Correct	57 ms	62968 KB	Output is correct
15	Correct	56 ms	62968 KB	Output is correct
16	Correct	56 ms	62968 KB	Output is correct
17	Correct	57 ms	63016 KB	Output is correct
18	Correct	68 ms	62968 KB	Output is correct
19	Correct	69 ms	62968 KB	Output is correct
20	Correct	57 ms	62972 KB	Output is correct
21	Correct	68 ms	62940 KB	Output is correct
22	Correct	57 ms	62968 KB	Output is correct
23	Correct	56 ms	62956 KB	Output is correct
24	Correct	56 ms	62968 KB	Output is correct

Subtask #2
24.0 / 24.0

#	결과	실행 시간	메모리	Grader output
1	Correct	57 ms	62968 KB	Output is correct
2	Correct	57 ms	62968 KB	Output is correct
3	Correct	68 ms	62968 KB	Output is correct
4	Correct	69 ms	62940 KB	Output is correct
5	Correct	65 ms	63096 KB	Output is correct
6	Correct	191 ms	62968 KB	Output is correct
7	Correct	69 ms	62968 KB	Output is correct
8	Correct	67 ms	62968 KB	Output is correct
9	Correct	57 ms	62968 KB	Output is correct
10	Correct	67 ms	63024 KB	Output is correct
11	Correct	66 ms	62968 KB	Output is correct
12	Correct	67 ms	62940 KB	Output is correct
13	Correct	58 ms	62976 KB	Output is correct
14	Correct	57 ms	62968 KB	Output is correct
15	Correct	56 ms	62968 KB	Output is correct
16	Correct	56 ms	62968 KB	Output is correct
17	Correct	57 ms	63016 KB	Output is correct
18	Correct	68 ms	62968 KB	Output is correct
19	Correct	69 ms	62968 KB	Output is correct
20	Correct	57 ms	62972 KB	Output is correct
21	Correct	68 ms	62940 KB	Output is correct
22	Correct	57 ms	62968 KB	Output is correct
23	Correct	56 ms	62956 KB	Output is correct
24	Correct	56 ms	62968 KB	Output is correct
25	Correct	56 ms	63032 KB	Output is correct
26	Correct	60 ms	63224 KB	Output is correct
27	Correct	59 ms	63224 KB	Output is correct
28	Correct	59 ms	63352 KB	Output is correct
29	Correct	66 ms	63296 KB	Output is correct
30	Correct	63 ms	63232 KB	Output is correct
31	Correct	57 ms	62968 KB	Output is correct
32	Correct	59 ms	63352 KB	Output is correct
33	Correct	56 ms	62940 KB	Output is correct
34	Correct	58 ms	63224 KB	Output is correct
35	Correct	68 ms	63224 KB	Output is correct
36	Correct	59 ms	63224 KB	Output is correct
37	Correct	59 ms	63224 KB	Output is correct
38	Correct	58 ms	62968 KB	Output is correct
39	Correct	60 ms	63224 KB	Output is correct
40	Correct	59 ms	63212 KB	Output is correct
41	Correct	58 ms	63224 KB	Output is correct
42	Correct	59 ms	63224 KB	Output is correct
43	Correct	59 ms	63352 KB	Output is correct
44	Correct	57 ms	62968 KB	Output is correct
45	Correct	60 ms	63272 KB	Output is correct
46	Correct	59 ms	63224 KB	Output is correct
47	Correct	56 ms	62968 KB	Output is correct
48	Correct	59 ms	63224 KB	Output is correct
49	Correct	59 ms	63292 KB	Output is correct
50	Correct	59 ms	63324 KB	Output is correct
51	Correct	60 ms	63224 KB	Output is correct
52	Correct	58 ms	63096 KB	Output is correct
53	Correct	59 ms	63224 KB	Output is correct
54	Correct	59 ms	63224 KB	Output is correct

Subtask #3
14.0 / 14.0

#	결과	실행 시간	메모리	Grader output
1	Correct	57 ms	62968 KB	Output is correct
2	Correct	57 ms	62968 KB	Output is correct
3	Correct	68 ms	62968 KB	Output is correct
4	Correct	69 ms	62940 KB	Output is correct
5	Correct	65 ms	63096 KB	Output is correct
6	Correct	191 ms	62968 KB	Output is correct
7	Correct	69 ms	62968 KB	Output is correct
8	Correct	67 ms	62968 KB	Output is correct
9	Correct	57 ms	62968 KB	Output is correct
10	Correct	67 ms	63024 KB	Output is correct
11	Correct	66 ms	62968 KB	Output is correct
12	Correct	67 ms	62940 KB	Output is correct
13	Correct	58 ms	62976 KB	Output is correct
14	Correct	57 ms	62968 KB	Output is correct
15	Correct	56 ms	62968 KB	Output is correct
16	Correct	56 ms	62968 KB	Output is correct
17	Correct	57 ms	63016 KB	Output is correct
18	Correct	68 ms	62968 KB	Output is correct
19	Correct	69 ms	62968 KB	Output is correct
20	Correct	57 ms	62972 KB	Output is correct
21	Correct	68 ms	62940 KB	Output is correct
22	Correct	57 ms	62968 KB	Output is correct
23	Correct	56 ms	62956 KB	Output is correct
24	Correct	56 ms	62968 KB	Output is correct
25	Correct	57 ms	63032 KB	Output is correct
26	Correct	142 ms	68196 KB	Output is correct
27	Correct	187 ms	68444 KB	Output is correct
28	Correct	59 ms	63224 KB	Output is correct
29	Correct	56 ms	62968 KB	Output is correct
30	Correct	56 ms	62968 KB	Output is correct
31	Correct	184 ms	68472 KB	Output is correct
32	Correct	59 ms	63096 KB	Output is correct
33	Correct	240 ms	74132 KB	Output is correct
34	Correct	184 ms	68508 KB	Output is correct
35	Correct	59 ms	63224 KB	Output is correct
36	Correct	203 ms	69112 KB	Output is correct
37	Correct	59 ms	63224 KB	Output is correct
38	Correct	59 ms	63224 KB	Output is correct
39	Correct	148 ms	68268 KB	Output is correct
40	Correct	59 ms	63352 KB	Output is correct
41	Correct	186 ms	68340 KB	Output is correct
42	Correct	237 ms	70116 KB	Output is correct
43	Correct	58 ms	62940 KB	Output is correct
44	Correct	252 ms	74208 KB	Output is correct
45	Correct	273 ms	71288 KB	Output is correct
46	Correct	58 ms	63224 KB	Output is correct
47	Correct	64 ms	63224 KB	Output is correct

Subtask #4
22.0 / 22.0

#	결과	실행 시간	메모리	Grader output
1	Correct	142 ms	68208 KB	Output is correct
2	Correct	182 ms	72116 KB	Output is correct
3	Correct	61 ms	63224 KB	Output is correct
4	Correct	59 ms	63196 KB	Output is correct
5	Correct	56 ms	63096 KB	Output is correct
6	Correct	57 ms	62968 KB	Output is correct
7	Correct	58 ms	63096 KB	Output is correct
8	Correct	204 ms	70264 KB	Output is correct
9	Correct	58 ms	63096 KB	Output is correct
10	Correct	174 ms	69240 KB	Output is correct
11	Correct	56 ms	62968 KB	Output is correct
12	Correct	218 ms	69084 KB	Output is correct
13	Correct	199 ms	70136 KB	Output is correct
14	Correct	192 ms	71776 KB	Output is correct
15	Correct	141 ms	68292 KB	Output is correct
16	Correct	59 ms	63224 KB	Output is correct
17	Correct	70 ms	62968 KB	Output is correct
18	Correct	188 ms	71808 KB	Output is correct
19	Correct	251 ms	74804 KB	Output is correct
20	Correct	59 ms	63352 KB	Output is correct
21	Correct	56 ms	62968 KB	Output is correct
22	Correct	165 ms	70436 KB	Output is correct
23	Correct	59 ms	63224 KB	Output is correct
24	Correct	222 ms	69340 KB	Output is correct
25	Correct	230 ms	73820 KB	Output is correct
26	Correct	58 ms	63300 KB	Output is correct
27	Correct	60 ms	63224 KB	Output is correct
28	Correct	59 ms	63224 KB	Output is correct
29	Correct	60 ms	63096 KB	Output is correct
30	Correct	60 ms	63352 KB	Output is correct

Subtask #5
0 / 30.0

#	결과	실행 시간	메모리	Grader output
1	Correct	57 ms	62968 KB	Output is correct
2	Correct	57 ms	62968 KB	Output is correct
3	Correct	68 ms	62968 KB	Output is correct
4	Correct	69 ms	62940 KB	Output is correct
5	Correct	65 ms	63096 KB	Output is correct
6	Correct	191 ms	62968 KB	Output is correct
7	Correct	69 ms	62968 KB	Output is correct
8	Correct	67 ms	62968 KB	Output is correct
9	Correct	57 ms	62968 KB	Output is correct
10	Correct	67 ms	63024 KB	Output is correct
11	Correct	66 ms	62968 KB	Output is correct
12	Correct	67 ms	62940 KB	Output is correct
13	Correct	58 ms	62976 KB	Output is correct
14	Correct	57 ms	62968 KB	Output is correct
15	Correct	56 ms	62968 KB	Output is correct
16	Correct	56 ms	62968 KB	Output is correct
17	Correct	57 ms	63016 KB	Output is correct
18	Correct	68 ms	62968 KB	Output is correct
19	Correct	69 ms	62968 KB	Output is correct
20	Correct	57 ms	62972 KB	Output is correct
21	Correct	68 ms	62940 KB	Output is correct
22	Correct	57 ms	62968 KB	Output is correct
23	Correct	56 ms	62956 KB	Output is correct
24	Correct	56 ms	62968 KB	Output is correct
25	Correct	56 ms	63032 KB	Output is correct
26	Correct	60 ms	63224 KB	Output is correct
27	Correct	59 ms	63224 KB	Output is correct
28	Correct	59 ms	63352 KB	Output is correct
29	Correct	66 ms	63296 KB	Output is correct
30	Correct	63 ms	63232 KB	Output is correct
31	Correct	57 ms	62968 KB	Output is correct
32	Correct	59 ms	63352 KB	Output is correct
33	Correct	56 ms	62940 KB	Output is correct
34	Correct	58 ms	63224 KB	Output is correct
35	Correct	68 ms	63224 KB	Output is correct
36	Correct	59 ms	63224 KB	Output is correct
37	Correct	59 ms	63224 KB	Output is correct
38	Correct	58 ms	62968 KB	Output is correct
39	Correct	60 ms	63224 KB	Output is correct
40	Correct	59 ms	63212 KB	Output is correct
41	Correct	58 ms	63224 KB	Output is correct
42	Correct	59 ms	63224 KB	Output is correct
43	Correct	59 ms	63352 KB	Output is correct
44	Correct	57 ms	62968 KB	Output is correct
45	Correct	60 ms	63272 KB	Output is correct
46	Correct	59 ms	63224 KB	Output is correct
47	Correct	56 ms	62968 KB	Output is correct
48	Correct	59 ms	63224 KB	Output is correct
49	Correct	59 ms	63292 KB	Output is correct
50	Correct	59 ms	63324 KB	Output is correct
51	Correct	60 ms	63224 KB	Output is correct
52	Correct	58 ms	63096 KB	Output is correct
53	Correct	59 ms	63224 KB	Output is correct
54	Correct	59 ms	63224 KB	Output is correct
55	Correct	57 ms	63032 KB	Output is correct
56	Correct	142 ms	68196 KB	Output is correct
57	Correct	187 ms	68444 KB	Output is correct
58	Correct	59 ms	63224 KB	Output is correct
59	Correct	56 ms	62968 KB	Output is correct
60	Correct	56 ms	62968 KB	Output is correct
61	Correct	184 ms	68472 KB	Output is correct
62	Correct	59 ms	63096 KB	Output is correct
63	Correct	240 ms	74132 KB	Output is correct
64	Correct	184 ms	68508 KB	Output is correct
65	Correct	59 ms	63224 KB	Output is correct
66	Correct	203 ms	69112 KB	Output is correct
67	Correct	59 ms	63224 KB	Output is correct
68	Correct	59 ms	63224 KB	Output is correct
69	Correct	148 ms	68268 KB	Output is correct
70	Correct	59 ms	63352 KB	Output is correct
71	Correct	186 ms	68340 KB	Output is correct
72	Correct	237 ms	70116 KB	Output is correct
73	Correct	58 ms	62940 KB	Output is correct
74	Correct	252 ms	74208 KB	Output is correct
75	Correct	273 ms	71288 KB	Output is correct
76	Correct	58 ms	63224 KB	Output is correct
77	Correct	64 ms	63224 KB	Output is correct
78	Correct	142 ms	68208 KB	Output is correct
79	Correct	182 ms	72116 KB	Output is correct
80	Correct	61 ms	63224 KB	Output is correct
81	Correct	59 ms	63196 KB	Output is correct
82	Correct	56 ms	63096 KB	Output is correct
83	Correct	57 ms	62968 KB	Output is correct
84	Correct	58 ms	63096 KB	Output is correct
85	Correct	204 ms	70264 KB	Output is correct
86	Correct	58 ms	63096 KB	Output is correct
87	Correct	174 ms	69240 KB	Output is correct
88	Correct	56 ms	62968 KB	Output is correct
89	Correct	218 ms	69084 KB	Output is correct
90	Correct	199 ms	70136 KB	Output is correct
91	Correct	192 ms	71776 KB	Output is correct
92	Correct	141 ms	68292 KB	Output is correct
93	Correct	59 ms	63224 KB	Output is correct
94	Correct	70 ms	62968 KB	Output is correct
95	Correct	188 ms	71808 KB	Output is correct
96	Correct	251 ms	74804 KB	Output is correct
97	Correct	59 ms	63352 KB	Output is correct
98	Correct	56 ms	62968 KB	Output is correct
99	Correct	165 ms	70436 KB	Output is correct
100	Correct	59 ms	63224 KB	Output is correct
101	Correct	222 ms	69340 KB	Output is correct
102	Correct	230 ms	73820 KB	Output is correct
103	Correct	58 ms	63300 KB	Output is correct
104	Correct	60 ms	63224 KB	Output is correct
105	Correct	59 ms	63224 KB	Output is correct
106	Correct	60 ms	63096 KB	Output is correct
107	Correct	60 ms	63352 KB	Output is correct
108	Runtime error	970 ms	195784 KB	Execution killed with signal 11 (could be triggered by violating memory limits)
109	Halted	0 ms	0 KB	-

답안 #138134

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