답안 #138137

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
138137	2019-07-29T12:02:08 Z	Mahmoud_Adel	Mergers (JOI19_mergers)	C++14	70 / 100	693 ms	188008 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]) 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();
		assert(node > 0);
	}
	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	73 ms	62968 KB	Output is correct
2	Correct	68 ms	62968 KB	Output is correct
3	Correct	70 ms	62968 KB	Output is correct
4	Correct	69 ms	63008 KB	Output is correct
5	Correct	71 ms	63096 KB	Output is correct
6	Correct	68 ms	62968 KB	Output is correct
7	Correct	67 ms	63000 KB	Output is correct
8	Correct	68 ms	62972 KB	Output is correct
9	Correct	69 ms	62928 KB	Output is correct
10	Correct	70 ms	63068 KB	Output is correct
11	Correct	70 ms	62968 KB	Output is correct
12	Correct	68 ms	62940 KB	Output is correct
13	Correct	69 ms	62968 KB	Output is correct
14	Correct	68 ms	62968 KB	Output is correct
15	Correct	69 ms	62972 KB	Output is correct
16	Correct	57 ms	63044 KB	Output is correct
17	Correct	57 ms	62968 KB	Output is correct
18	Correct	70 ms	62968 KB	Output is correct
19	Correct	64 ms	63096 KB	Output is correct
20	Correct	57 ms	63096 KB	Output is correct
21	Correct	69 ms	62968 KB	Output is correct
22	Correct	69 ms	62968 KB	Output is correct
23	Correct	70 ms	63096 KB	Output is correct
24	Correct	55 ms	62968 KB	Output is correct

Subtask #2
24.0 / 24.0

#	결과	실행 시간	메모리	Grader output
1	Correct	73 ms	62968 KB	Output is correct
2	Correct	68 ms	62968 KB	Output is correct
3	Correct	70 ms	62968 KB	Output is correct
4	Correct	69 ms	63008 KB	Output is correct
5	Correct	71 ms	63096 KB	Output is correct
6	Correct	68 ms	62968 KB	Output is correct
7	Correct	67 ms	63000 KB	Output is correct
8	Correct	68 ms	62972 KB	Output is correct
9	Correct	69 ms	62928 KB	Output is correct
10	Correct	70 ms	63068 KB	Output is correct
11	Correct	70 ms	62968 KB	Output is correct
12	Correct	68 ms	62940 KB	Output is correct
13	Correct	69 ms	62968 KB	Output is correct
14	Correct	68 ms	62968 KB	Output is correct
15	Correct	69 ms	62972 KB	Output is correct
16	Correct	57 ms	63044 KB	Output is correct
17	Correct	57 ms	62968 KB	Output is correct
18	Correct	70 ms	62968 KB	Output is correct
19	Correct	64 ms	63096 KB	Output is correct
20	Correct	57 ms	63096 KB	Output is correct
21	Correct	69 ms	62968 KB	Output is correct
22	Correct	69 ms	62968 KB	Output is correct
23	Correct	70 ms	63096 KB	Output is correct
24	Correct	55 ms	62968 KB	Output is correct
25	Correct	60 ms	62932 KB	Output is correct
26	Correct	58 ms	63224 KB	Output is correct
27	Correct	59 ms	63196 KB	Output is correct
28	Correct	61 ms	63352 KB	Output is correct
29	Correct	59 ms	63224 KB	Output is correct
30	Correct	59 ms	63096 KB	Output is correct
31	Correct	57 ms	62968 KB	Output is correct
32	Correct	59 ms	63328 KB	Output is correct
33	Correct	56 ms	62968 KB	Output is correct
34	Correct	58 ms	63156 KB	Output is correct
35	Correct	58 ms	63224 KB	Output is correct
36	Correct	59 ms	63224 KB	Output is correct
37	Correct	63 ms	63240 KB	Output is correct
38	Correct	57 ms	62968 KB	Output is correct
39	Correct	60 ms	63224 KB	Output is correct
40	Correct	59 ms	63096 KB	Output is correct
41	Correct	59 ms	63096 KB	Output is correct
42	Correct	59 ms	63224 KB	Output is correct
43	Correct	59 ms	63324 KB	Output is correct
44	Correct	56 ms	62968 KB	Output is correct
45	Correct	61 ms	63352 KB	Output is correct
46	Correct	59 ms	63248 KB	Output is correct
47	Correct	56 ms	62972 KB	Output is correct
48	Correct	65 ms	63224 KB	Output is correct
49	Correct	72 ms	63224 KB	Output is correct
50	Correct	71 ms	63224 KB	Output is correct
51	Correct	59 ms	63228 KB	Output is correct
52	Correct	58 ms	63096 KB	Output is correct
53	Correct	58 ms	63224 KB	Output is correct
54	Correct	58 ms	63196 KB	Output is correct

Subtask #3
14.0 / 14.0

#	결과	실행 시간	메모리	Grader output
1	Correct	73 ms	62968 KB	Output is correct
2	Correct	68 ms	62968 KB	Output is correct
3	Correct	70 ms	62968 KB	Output is correct
4	Correct	69 ms	63008 KB	Output is correct
5	Correct	71 ms	63096 KB	Output is correct
6	Correct	68 ms	62968 KB	Output is correct
7	Correct	67 ms	63000 KB	Output is correct
8	Correct	68 ms	62972 KB	Output is correct
9	Correct	69 ms	62928 KB	Output is correct
10	Correct	70 ms	63068 KB	Output is correct
11	Correct	70 ms	62968 KB	Output is correct
12	Correct	68 ms	62940 KB	Output is correct
13	Correct	69 ms	62968 KB	Output is correct
14	Correct	68 ms	62968 KB	Output is correct
15	Correct	69 ms	62972 KB	Output is correct
16	Correct	57 ms	63044 KB	Output is correct
17	Correct	57 ms	62968 KB	Output is correct
18	Correct	70 ms	62968 KB	Output is correct
19	Correct	64 ms	63096 KB	Output is correct
20	Correct	57 ms	63096 KB	Output is correct
21	Correct	69 ms	62968 KB	Output is correct
22	Correct	69 ms	62968 KB	Output is correct
23	Correct	70 ms	63096 KB	Output is correct
24	Correct	55 ms	62968 KB	Output is correct
25	Correct	56 ms	62968 KB	Output is correct
26	Correct	142 ms	68356 KB	Output is correct
27	Correct	182 ms	68352 KB	Output is correct
28	Correct	59 ms	63228 KB	Output is correct
29	Correct	57 ms	62968 KB	Output is correct
30	Correct	56 ms	62968 KB	Output is correct
31	Correct	224 ms	68728 KB	Output is correct
32	Correct	59 ms	63100 KB	Output is correct
33	Correct	246 ms	74104 KB	Output is correct
34	Correct	243 ms	68348 KB	Output is correct
35	Correct	59 ms	63224 KB	Output is correct
36	Correct	211 ms	69108 KB	Output is correct
37	Correct	59 ms	63224 KB	Output is correct
38	Correct	59 ms	63224 KB	Output is correct
39	Correct	145 ms	68180 KB	Output is correct
40	Correct	59 ms	63480 KB	Output is correct
41	Correct	179 ms	68400 KB	Output is correct
42	Correct	218 ms	70140 KB	Output is correct
43	Correct	56 ms	62968 KB	Output is correct
44	Correct	227 ms	74228 KB	Output is correct
45	Correct	206 ms	71288 KB	Output is correct
46	Correct	58 ms	63196 KB	Output is correct
47	Correct	58 ms	63224 KB	Output is correct

Subtask #4
22.0 / 22.0

#	결과	실행 시간	메모리	Grader output
1	Correct	139 ms	68204 KB	Output is correct
2	Correct	172 ms	72048 KB	Output is correct
3	Correct	59 ms	63224 KB	Output is correct
4	Correct	59 ms	63224 KB	Output is correct
5	Correct	56 ms	62968 KB	Output is correct
6	Correct	57 ms	62968 KB	Output is correct
7	Correct	59 ms	63224 KB	Output is correct
8	Correct	202 ms	70236 KB	Output is correct
9	Correct	60 ms	63224 KB	Output is correct
10	Correct	178 ms	69212 KB	Output is correct
11	Correct	57 ms	62968 KB	Output is correct
12	Correct	216 ms	69056 KB	Output is correct
13	Correct	235 ms	70136 KB	Output is correct
14	Correct	199 ms	71652 KB	Output is correct
15	Correct	165 ms	68236 KB	Output is correct
16	Correct	58 ms	63192 KB	Output is correct
17	Correct	57 ms	62968 KB	Output is correct
18	Correct	172 ms	71660 KB	Output is correct
19	Correct	235 ms	74872 KB	Output is correct
20	Correct	61 ms	63196 KB	Output is correct
21	Correct	57 ms	63068 KB	Output is correct
22	Correct	165 ms	70416 KB	Output is correct
23	Correct	59 ms	63228 KB	Output is correct
24	Correct	212 ms	69468 KB	Output is correct
25	Correct	221 ms	73848 KB	Output is correct
26	Correct	58 ms	63224 KB	Output is correct
27	Correct	76 ms	63324 KB	Output is correct
28	Correct	59 ms	63224 KB	Output is correct
29	Correct	64 ms	63212 KB	Output is correct
30	Correct	59 ms	63224 KB	Output is correct

Subtask #5
0 / 30.0

#	결과	실행 시간	메모리	Grader output
1	Correct	73 ms	62968 KB	Output is correct
2	Correct	68 ms	62968 KB	Output is correct
3	Correct	70 ms	62968 KB	Output is correct
4	Correct	69 ms	63008 KB	Output is correct
5	Correct	71 ms	63096 KB	Output is correct
6	Correct	68 ms	62968 KB	Output is correct
7	Correct	67 ms	63000 KB	Output is correct
8	Correct	68 ms	62972 KB	Output is correct
9	Correct	69 ms	62928 KB	Output is correct
10	Correct	70 ms	63068 KB	Output is correct
11	Correct	70 ms	62968 KB	Output is correct
12	Correct	68 ms	62940 KB	Output is correct
13	Correct	69 ms	62968 KB	Output is correct
14	Correct	68 ms	62968 KB	Output is correct
15	Correct	69 ms	62972 KB	Output is correct
16	Correct	57 ms	63044 KB	Output is correct
17	Correct	57 ms	62968 KB	Output is correct
18	Correct	70 ms	62968 KB	Output is correct
19	Correct	64 ms	63096 KB	Output is correct
20	Correct	57 ms	63096 KB	Output is correct
21	Correct	69 ms	62968 KB	Output is correct
22	Correct	69 ms	62968 KB	Output is correct
23	Correct	70 ms	63096 KB	Output is correct
24	Correct	55 ms	62968 KB	Output is correct
25	Correct	60 ms	62932 KB	Output is correct
26	Correct	58 ms	63224 KB	Output is correct
27	Correct	59 ms	63196 KB	Output is correct
28	Correct	61 ms	63352 KB	Output is correct
29	Correct	59 ms	63224 KB	Output is correct
30	Correct	59 ms	63096 KB	Output is correct
31	Correct	57 ms	62968 KB	Output is correct
32	Correct	59 ms	63328 KB	Output is correct
33	Correct	56 ms	62968 KB	Output is correct
34	Correct	58 ms	63156 KB	Output is correct
35	Correct	58 ms	63224 KB	Output is correct
36	Correct	59 ms	63224 KB	Output is correct
37	Correct	63 ms	63240 KB	Output is correct
38	Correct	57 ms	62968 KB	Output is correct
39	Correct	60 ms	63224 KB	Output is correct
40	Correct	59 ms	63096 KB	Output is correct
41	Correct	59 ms	63096 KB	Output is correct
42	Correct	59 ms	63224 KB	Output is correct
43	Correct	59 ms	63324 KB	Output is correct
44	Correct	56 ms	62968 KB	Output is correct
45	Correct	61 ms	63352 KB	Output is correct
46	Correct	59 ms	63248 KB	Output is correct
47	Correct	56 ms	62972 KB	Output is correct
48	Correct	65 ms	63224 KB	Output is correct
49	Correct	72 ms	63224 KB	Output is correct
50	Correct	71 ms	63224 KB	Output is correct
51	Correct	59 ms	63228 KB	Output is correct
52	Correct	58 ms	63096 KB	Output is correct
53	Correct	58 ms	63224 KB	Output is correct
54	Correct	58 ms	63196 KB	Output is correct
55	Correct	56 ms	62968 KB	Output is correct
56	Correct	142 ms	68356 KB	Output is correct
57	Correct	182 ms	68352 KB	Output is correct
58	Correct	59 ms	63228 KB	Output is correct
59	Correct	57 ms	62968 KB	Output is correct
60	Correct	56 ms	62968 KB	Output is correct
61	Correct	224 ms	68728 KB	Output is correct
62	Correct	59 ms	63100 KB	Output is correct
63	Correct	246 ms	74104 KB	Output is correct
64	Correct	243 ms	68348 KB	Output is correct
65	Correct	59 ms	63224 KB	Output is correct
66	Correct	211 ms	69108 KB	Output is correct
67	Correct	59 ms	63224 KB	Output is correct
68	Correct	59 ms	63224 KB	Output is correct
69	Correct	145 ms	68180 KB	Output is correct
70	Correct	59 ms	63480 KB	Output is correct
71	Correct	179 ms	68400 KB	Output is correct
72	Correct	218 ms	70140 KB	Output is correct
73	Correct	56 ms	62968 KB	Output is correct
74	Correct	227 ms	74228 KB	Output is correct
75	Correct	206 ms	71288 KB	Output is correct
76	Correct	58 ms	63196 KB	Output is correct
77	Correct	58 ms	63224 KB	Output is correct
78	Correct	139 ms	68204 KB	Output is correct
79	Correct	172 ms	72048 KB	Output is correct
80	Correct	59 ms	63224 KB	Output is correct
81	Correct	59 ms	63224 KB	Output is correct
82	Correct	56 ms	62968 KB	Output is correct
83	Correct	57 ms	62968 KB	Output is correct
84	Correct	59 ms	63224 KB	Output is correct
85	Correct	202 ms	70236 KB	Output is correct
86	Correct	60 ms	63224 KB	Output is correct
87	Correct	178 ms	69212 KB	Output is correct
88	Correct	57 ms	62968 KB	Output is correct
89	Correct	216 ms	69056 KB	Output is correct
90	Correct	235 ms	70136 KB	Output is correct
91	Correct	199 ms	71652 KB	Output is correct
92	Correct	165 ms	68236 KB	Output is correct
93	Correct	58 ms	63192 KB	Output is correct
94	Correct	57 ms	62968 KB	Output is correct
95	Correct	172 ms	71660 KB	Output is correct
96	Correct	235 ms	74872 KB	Output is correct
97	Correct	61 ms	63196 KB	Output is correct
98	Correct	57 ms	63068 KB	Output is correct
99	Correct	165 ms	70416 KB	Output is correct
100	Correct	59 ms	63228 KB	Output is correct
101	Correct	212 ms	69468 KB	Output is correct
102	Correct	221 ms	73848 KB	Output is correct
103	Correct	58 ms	63224 KB	Output is correct
104	Correct	76 ms	63324 KB	Output is correct
105	Correct	59 ms	63224 KB	Output is correct
106	Correct	64 ms	63212 KB	Output is correct
107	Correct	59 ms	63224 KB	Output is correct
108	Runtime error	693 ms	188008 KB	Execution killed with signal 11 (could be triggered by violating memory limits)
109	Halted	0 ms	0 KB	-

답안 #138137

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