oj.uz

Submission #138103

# Submission time Handle Problem Language Result Execution time Memory
138103 2019-07-29T10:53:01 Z Mahmoud_Adel Mergers (JOI19_mergers) C++14
70 / 100
 1476 ms 126176 KB 
#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], acc[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)
{
	if(mark[u] && u != last) deg[u]++, deg[last]++, last = u;
	for(int v : adj[u]) if(p != v) 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] += vec[i].size();
	}
	if(n == 1 || m == 1) return cout << 0 << endl, 0;
	calc(1, 0);
	mark[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:43:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d %d", &n, &m);
  ~~~~~^~~~~~~~~~~~~~~~~
mergers.cpp:46:21: 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:47:44: 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

# Verdict Execution time Memory Grader output
1 Correct 59 ms 63228 KB Output is correct
2 Correct 57 ms 62968 KB Output is correct
3 Correct 57 ms 62968 KB Output is correct
4 Correct 63 ms 63056 KB Output is correct
5 Correct 57 ms 63096 KB Output is correct
6 Correct 58 ms 63096 KB Output is correct
7 Correct 57 ms 62968 KB Output is correct
8 Correct 57 ms 62968 KB Output is correct
9 Correct 57 ms 62968 KB Output is correct
10 Correct 56 ms 62984 KB Output is correct
11 Correct 58 ms 62968 KB Output is correct
12 Correct 56 ms 62968 KB Output is correct
13 Correct 56 ms 62940 KB Output is correct
14 Correct 56 ms 62968 KB Output is correct
15 Correct 56 ms 62940 KB Output is correct
16 Correct 57 ms 62968 KB Output is correct
17 Correct 57 ms 62968 KB Output is correct
18 Correct 57 ms 62968 KB Output is correct
19 Correct 60 ms 63096 KB Output is correct
20 Correct 57 ms 63004 KB Output is correct
21 Correct 57 ms 62968 KB Output is correct
22 Correct 57 ms 62968 KB Output is correct
23 Correct 57 ms 62968 KB Output is correct
24 Correct 57 ms 63140 KB Output is correct

Subtask #2
24.0 / 24.0

# Verdict Execution time Memory Grader output
1 Correct 59 ms 63228 KB Output is correct
2 Correct 57 ms 62968 KB Output is correct
3 Correct 57 ms 62968 KB Output is correct
4 Correct 63 ms 63056 KB Output is correct
5 Correct 57 ms 63096 KB Output is correct
6 Correct 58 ms 63096 KB Output is correct
7 Correct 57 ms 62968 KB Output is correct
8 Correct 57 ms 62968 KB Output is correct
9 Correct 57 ms 62968 KB Output is correct
10 Correct 56 ms 62984 KB Output is correct
11 Correct 58 ms 62968 KB Output is correct
12 Correct 56 ms 62968 KB Output is correct
13 Correct 56 ms 62940 KB Output is correct
14 Correct 56 ms 62968 KB Output is correct
15 Correct 56 ms 62940 KB Output is correct
16 Correct 57 ms 62968 KB Output is correct
17 Correct 57 ms 62968 KB Output is correct
18 Correct 57 ms 62968 KB Output is correct
19 Correct 60 ms 63096 KB Output is correct
20 Correct 57 ms 63004 KB Output is correct
21 Correct 57 ms 62968 KB Output is correct
22 Correct 57 ms 62968 KB Output is correct
23 Correct 57 ms 62968 KB Output is correct
24 Correct 57 ms 63140 KB Output is correct
25 Correct 58 ms 62996 KB Output is correct
26 Correct 69 ms 63228 KB Output is correct
27 Correct 68 ms 63200 KB Output is correct
28 Correct 69 ms 63352 KB Output is correct
29 Correct 60 ms 63352 KB Output is correct
30 Correct 59 ms 63224 KB Output is correct
31 Correct 57 ms 62968 KB Output is correct
32 Correct 60 ms 63480 KB Output is correct
33 Correct 57 ms 62952 KB Output is correct
34 Correct 59 ms 63224 KB Output is correct
35 Correct 59 ms 63352 KB Output is correct
36 Correct 59 ms 63224 KB Output is correct
37 Correct 59 ms 63224 KB Output is correct
38 Correct 57 ms 62968 KB Output is correct
39 Correct 59 ms 63224 KB Output is correct
40 Correct 59 ms 63224 KB Output is correct
41 Correct 59 ms 63248 KB Output is correct
42 Correct 59 ms 63224 KB Output is correct
43 Correct 61 ms 63324 KB Output is correct
44 Correct 68 ms 63064 KB Output is correct
45 Correct 63 ms 63480 KB Output is correct
46 Correct 60 ms 63252 KB Output is correct
47 Correct 57 ms 62996 KB Output is correct
48 Correct 66 ms 63256 KB Output is correct
49 Correct 59 ms 63352 KB Output is correct
50 Correct 60 ms 63352 KB Output is correct
51 Correct 59 ms 63224 KB Output is correct
52 Correct 68 ms 63224 KB Output is correct
53 Correct 59 ms 63224 KB Output is correct
54 Correct 59 ms 63200 KB Output is correct

Subtask #3
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 59 ms 63228 KB Output is correct
2 Correct 57 ms 62968 KB Output is correct
3 Correct 57 ms 62968 KB Output is correct
4 Correct 63 ms 63056 KB Output is correct
5 Correct 57 ms 63096 KB Output is correct
6 Correct 58 ms 63096 KB Output is correct
7 Correct 57 ms 62968 KB Output is correct
8 Correct 57 ms 62968 KB Output is correct
9 Correct 57 ms 62968 KB Output is correct
10 Correct 56 ms 62984 KB Output is correct
11 Correct 58 ms 62968 KB Output is correct
12 Correct 56 ms 62968 KB Output is correct
13 Correct 56 ms 62940 KB Output is correct
14 Correct 56 ms 62968 KB Output is correct
15 Correct 56 ms 62940 KB Output is correct
16 Correct 57 ms 62968 KB Output is correct
17 Correct 57 ms 62968 KB Output is correct
18 Correct 57 ms 62968 KB Output is correct
19 Correct 60 ms 63096 KB Output is correct
20 Correct 57 ms 63004 KB Output is correct
21 Correct 57 ms 62968 KB Output is correct
22 Correct 57 ms 62968 KB Output is correct
23 Correct 57 ms 62968 KB Output is correct
24 Correct 57 ms 63140 KB Output is correct
25 Correct 56 ms 63096 KB Output is correct
26 Correct 139 ms 69060 KB Output is correct
27 Correct 210 ms 69112 KB Output is correct
28 Correct 59 ms 63224 KB Output is correct
29 Correct 57 ms 63096 KB Output is correct
30 Correct 60 ms 62988 KB Output is correct
31 Correct 172 ms 69244 KB Output is correct
32 Correct 69 ms 63224 KB Output is correct
33 Correct 232 ms 74716 KB Output is correct
34 Correct 172 ms 69156 KB Output is correct
35 Correct 59 ms 63196 KB Output is correct
36 Correct 208 ms 69904 KB Output is correct
37 Correct 62 ms 63308 KB Output is correct
38 Correct 59 ms 63224 KB Output is correct
39 Correct 148 ms 69104 KB Output is correct
40 Correct 62 ms 63404 KB Output is correct
41 Correct 150 ms 68672 KB Output is correct
42 Correct 215 ms 70848 KB Output is correct
43 Correct 64 ms 62960 KB Output is correct
44 Correct 242 ms 74656 KB Output is correct
45 Correct 204 ms 72056 KB Output is correct
46 Correct 69 ms 63248 KB Output is correct
47 Correct 70 ms 63224 KB Output is correct

Subtask #4
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 146 ms 68872 KB Output is correct
2 Correct 164 ms 72688 KB Output is correct
3 Correct 70 ms 63224 KB Output is correct
4 Correct 59 ms 63224 KB Output is correct
5 Correct 58 ms 62968 KB Output is correct
6 Correct 61 ms 62932 KB Output is correct
7 Correct 69 ms 63228 KB Output is correct
8 Correct 223 ms 71044 KB Output is correct
9 Correct 59 ms 63224 KB Output is correct
10 Correct 168 ms 69852 KB Output is correct
11 Correct 57 ms 62968 KB Output is correct
12 Correct 214 ms 70024 KB Output is correct
13 Correct 225 ms 70936 KB Output is correct
14 Correct 191 ms 72440 KB Output is correct
15 Correct 161 ms 69012 KB Output is correct
16 Correct 59 ms 63176 KB Output is correct
17 Correct 57 ms 62972 KB Output is correct
18 Correct 167 ms 72552 KB Output is correct
19 Correct 245 ms 75556 KB Output is correct
20 Correct 59 ms 63356 KB Output is correct
21 Correct 57 ms 62968 KB Output is correct
22 Correct 160 ms 71292 KB Output is correct
23 Correct 60 ms 63224 KB Output is correct
24 Correct 203 ms 70108 KB Output is correct
25 Correct 211 ms 74488 KB Output is correct
26 Correct 59 ms 63324 KB Output is correct
27 Correct 60 ms 63352 KB Output is correct
28 Correct 59 ms 63224 KB Output is correct
29 Correct 59 ms 63224 KB Output is correct
30 Correct 59 ms 63268 KB Output is correct

Subtask #5
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 59 ms 63228 KB Output is correct
2 Correct 57 ms 62968 KB Output is correct
3 Correct 57 ms 62968 KB Output is correct
4 Correct 63 ms 63056 KB Output is correct
5 Correct 57 ms 63096 KB Output is correct
6 Correct 58 ms 63096 KB Output is correct
7 Correct 57 ms 62968 KB Output is correct
8 Correct 57 ms 62968 KB Output is correct
9 Correct 57 ms 62968 KB Output is correct
10 Correct 56 ms 62984 KB Output is correct
11 Correct 58 ms 62968 KB Output is correct
12 Correct 56 ms 62968 KB Output is correct
13 Correct 56 ms 62940 KB Output is correct
14 Correct 56 ms 62968 KB Output is correct
15 Correct 56 ms 62940 KB Output is correct
16 Correct 57 ms 62968 KB Output is correct
17 Correct 57 ms 62968 KB Output is correct
18 Correct 57 ms 62968 KB Output is correct
19 Correct 60 ms 63096 KB Output is correct
20 Correct 57 ms 63004 KB Output is correct
21 Correct 57 ms 62968 KB Output is correct
22 Correct 57 ms 62968 KB Output is correct
23 Correct 57 ms 62968 KB Output is correct
24 Correct 57 ms 63140 KB Output is correct
25 Correct 58 ms 62996 KB Output is correct
26 Correct 69 ms 63228 KB Output is correct
27 Correct 68 ms 63200 KB Output is correct
28 Correct 69 ms 63352 KB Output is correct
29 Correct 60 ms 63352 KB Output is correct
30 Correct 59 ms 63224 KB Output is correct
31 Correct 57 ms 62968 KB Output is correct
32 Correct 60 ms 63480 KB Output is correct
33 Correct 57 ms 62952 KB Output is correct
34 Correct 59 ms 63224 KB Output is correct
35 Correct 59 ms 63352 KB Output is correct
36 Correct 59 ms 63224 KB Output is correct
37 Correct 59 ms 63224 KB Output is correct
38 Correct 57 ms 62968 KB Output is correct
39 Correct 59 ms 63224 KB Output is correct
40 Correct 59 ms 63224 KB Output is correct
41 Correct 59 ms 63248 KB Output is correct
42 Correct 59 ms 63224 KB Output is correct
43 Correct 61 ms 63324 KB Output is correct
44 Correct 68 ms 63064 KB Output is correct
45 Correct 63 ms 63480 KB Output is correct
46 Correct 60 ms 63252 KB Output is correct
47 Correct 57 ms 62996 KB Output is correct
48 Correct 66 ms 63256 KB Output is correct
49 Correct 59 ms 63352 KB Output is correct
50 Correct 60 ms 63352 KB Output is correct
51 Correct 59 ms 63224 KB Output is correct
52 Correct 68 ms 63224 KB Output is correct
53 Correct 59 ms 63224 KB Output is correct
54 Correct 59 ms 63200 KB Output is correct
55 Correct 56 ms 63096 KB Output is correct
56 Correct 139 ms 69060 KB Output is correct
57 Correct 210 ms 69112 KB Output is correct
58 Correct 59 ms 63224 KB Output is correct
59 Correct 57 ms 63096 KB Output is correct
60 Correct 60 ms 62988 KB Output is correct
61 Correct 172 ms 69244 KB Output is correct
62 Correct 69 ms 63224 KB Output is correct
63 Correct 232 ms 74716 KB Output is correct
64 Correct 172 ms 69156 KB Output is correct
65 Correct 59 ms 63196 KB Output is correct
66 Correct 208 ms 69904 KB Output is correct
67 Correct 62 ms 63308 KB Output is correct
68 Correct 59 ms 63224 KB Output is correct
69 Correct 148 ms 69104 KB Output is correct
70 Correct 62 ms 63404 KB Output is correct
71 Correct 150 ms 68672 KB Output is correct
72 Correct 215 ms 70848 KB Output is correct
73 Correct 64 ms 62960 KB Output is correct
74 Correct 242 ms 74656 KB Output is correct
75 Correct 204 ms 72056 KB Output is correct
76 Correct 69 ms 63248 KB Output is correct
77 Correct 70 ms 63224 KB Output is correct
78 Correct 146 ms 68872 KB Output is correct
79 Correct 164 ms 72688 KB Output is correct
80 Correct 70 ms 63224 KB Output is correct
81 Correct 59 ms 63224 KB Output is correct
82 Correct 58 ms 62968 KB Output is correct
83 Correct 61 ms 62932 KB Output is correct
84 Correct 69 ms 63228 KB Output is correct
85 Correct 223 ms 71044 KB Output is correct
86 Correct 59 ms 63224 KB Output is correct
87 Correct 168 ms 69852 KB Output is correct
88 Correct 57 ms 62968 KB Output is correct
89 Correct 214 ms 70024 KB Output is correct
90 Correct 225 ms 70936 KB Output is correct
91 Correct 191 ms 72440 KB Output is correct
92 Correct 161 ms 69012 KB Output is correct
93 Correct 59 ms 63176 KB Output is correct
94 Correct 57 ms 62972 KB Output is correct
95 Correct 167 ms 72552 KB Output is correct
96 Correct 245 ms 75556 KB Output is correct
97 Correct 59 ms 63356 KB Output is correct
98 Correct 57 ms 62968 KB Output is correct
99 Correct 160 ms 71292 KB Output is correct
100 Correct 60 ms 63224 KB Output is correct
101 Correct 203 ms 70108 KB Output is correct
102 Correct 211 ms 74488 KB Output is correct
103 Correct 59 ms 63324 KB Output is correct
104 Correct 60 ms 63352 KB Output is correct
105 Correct 59 ms 63224 KB Output is correct
106 Correct 59 ms 63224 KB Output is correct
107 Correct 59 ms 63268 KB Output is correct
108 Correct 794 ms 99972 KB Output is correct
109 Correct 1332 ms 104676 KB Output is correct
110 Correct 1067 ms 111724 KB Output is correct
111 Correct 1476 ms 126176 KB Output is correct
112 Correct 1411 ms 118412 KB Output is correct
113 Correct 866 ms 107724 KB Output is correct
114 Incorrect 879 ms 90388 KB Output isn't correct
115 Halted 0 ms 0 KB -