oj.uz

Submission #138132

# Submission time Handle Problem Language Result Execution time Memory
138132 2019-07-29T11:56:09 Z Mahmoud_Adel Mergers (JOI19_mergers) C++14
70 / 100
 799 ms 99080 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], 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] && 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

# Verdict Execution time Memory Grader output
1 Correct 57 ms 62968 KB Output is correct
2 Correct 57 ms 62940 KB Output is correct
3 Correct 56 ms 62968 KB Output is correct
4 Correct 56 ms 62968 KB Output is correct
5 Correct 56 ms 62968 KB Output is correct
6 Correct 56 ms 62972 KB Output is correct
7 Correct 56 ms 62968 KB Output is correct
8 Correct 56 ms 63020 KB Output is correct
9 Correct 56 ms 63044 KB Output is correct
10 Correct 57 ms 62968 KB Output is correct
11 Correct 72 ms 63108 KB Output is correct
12 Correct 58 ms 63068 KB Output is correct
13 Correct 57 ms 62924 KB Output is correct
14 Correct 57 ms 63016 KB Output is correct
15 Correct 57 ms 62940 KB Output is correct
16 Correct 57 ms 62968 KB Output is correct
17 Correct 62 ms 62980 KB Output is correct
18 Correct 68 ms 62972 KB Output is correct
19 Correct 57 ms 62968 KB Output is correct
20 Correct 64 ms 63096 KB Output is correct
21 Correct 73 ms 62940 KB Output is correct
22 Correct 69 ms 63028 KB Output is correct
23 Correct 68 ms 62940 KB Output is correct
24 Correct 67 ms 62940 KB Output is correct

Subtask #2
24.0 / 24.0

# Verdict Execution time Memory Grader output
1 Correct 57 ms 62968 KB Output is correct
2 Correct 57 ms 62940 KB Output is correct
3 Correct 56 ms 62968 KB Output is correct
4 Correct 56 ms 62968 KB Output is correct
5 Correct 56 ms 62968 KB Output is correct
6 Correct 56 ms 62972 KB Output is correct
7 Correct 56 ms 62968 KB Output is correct
8 Correct 56 ms 63020 KB Output is correct
9 Correct 56 ms 63044 KB Output is correct
10 Correct 57 ms 62968 KB Output is correct
11 Correct 72 ms 63108 KB Output is correct
12 Correct 58 ms 63068 KB Output is correct
13 Correct 57 ms 62924 KB Output is correct
14 Correct 57 ms 63016 KB Output is correct
15 Correct 57 ms 62940 KB Output is correct
16 Correct 57 ms 62968 KB Output is correct
17 Correct 62 ms 62980 KB Output is correct
18 Correct 68 ms 62972 KB Output is correct
19 Correct 57 ms 62968 KB Output is correct
20 Correct 64 ms 63096 KB Output is correct
21 Correct 73 ms 62940 KB Output is correct
22 Correct 69 ms 63028 KB Output is correct
23 Correct 68 ms 62940 KB Output is correct
24 Correct 67 ms 62940 KB Output is correct
25 Correct 63 ms 63024 KB Output is correct
26 Correct 59 ms 63224 KB Output is correct
27 Correct 59 ms 63196 KB Output is correct
28 Correct 60 ms 63352 KB Output is correct
29 Correct 59 ms 63224 KB Output is correct
30 Correct 60 ms 63212 KB Output is correct
31 Correct 57 ms 62964 KB Output is correct
32 Correct 59 ms 63480 KB Output is correct
33 Correct 57 ms 62968 KB Output is correct
34 Correct 59 ms 63228 KB Output is correct
35 Correct 60 ms 63352 KB Output is correct
36 Correct 59 ms 63208 KB Output is correct
37 Correct 66 ms 63248 KB Output is correct
38 Correct 57 ms 62972 KB Output is correct
39 Correct 65 ms 63252 KB Output is correct
40 Correct 63 ms 63224 KB Output is correct
41 Correct 66 ms 63228 KB Output is correct
42 Correct 59 ms 63352 KB Output is correct
43 Correct 59 ms 63352 KB Output is correct
44 Correct 68 ms 62968 KB Output is correct
45 Correct 59 ms 63352 KB Output is correct
46 Correct 60 ms 63228 KB Output is correct
47 Correct 61 ms 62968 KB Output is correct
48 Correct 70 ms 63188 KB Output is correct
49 Correct 61 ms 63352 KB Output is correct
50 Correct 63 ms 63352 KB Output is correct
51 Correct 59 ms 63224 KB Output is correct
52 Correct 58 ms 63224 KB Output is correct
53 Correct 59 ms 63224 KB Output is correct
54 Correct 61 ms 63224 KB Output is correct

Subtask #3
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 57 ms 62968 KB Output is correct
2 Correct 57 ms 62940 KB Output is correct
3 Correct 56 ms 62968 KB Output is correct
4 Correct 56 ms 62968 KB Output is correct
5 Correct 56 ms 62968 KB Output is correct
6 Correct 56 ms 62972 KB Output is correct
7 Correct 56 ms 62968 KB Output is correct
8 Correct 56 ms 63020 KB Output is correct
9 Correct 56 ms 63044 KB Output is correct
10 Correct 57 ms 62968 KB Output is correct
11 Correct 72 ms 63108 KB Output is correct
12 Correct 58 ms 63068 KB Output is correct
13 Correct 57 ms 62924 KB Output is correct
14 Correct 57 ms 63016 KB Output is correct
15 Correct 57 ms 62940 KB Output is correct
16 Correct 57 ms 62968 KB Output is correct
17 Correct 62 ms 62980 KB Output is correct
18 Correct 68 ms 62972 KB Output is correct
19 Correct 57 ms 62968 KB Output is correct
20 Correct 64 ms 63096 KB Output is correct
21 Correct 73 ms 62940 KB Output is correct
22 Correct 69 ms 63028 KB Output is correct
23 Correct 68 ms 62940 KB Output is correct
24 Correct 67 ms 62940 KB Output is correct
25 Correct 68 ms 62992 KB Output is correct
26 Correct 169 ms 69596 KB Output is correct
27 Correct 251 ms 69624 KB Output is correct
28 Correct 60 ms 63224 KB Output is correct
29 Correct 57 ms 62968 KB Output is correct
30 Correct 57 ms 63080 KB Output is correct
31 Correct 179 ms 69872 KB Output is correct
32 Correct 59 ms 63224 KB Output is correct
33 Correct 235 ms 75256 KB Output is correct
34 Correct 174 ms 69660 KB Output is correct
35 Correct 59 ms 63196 KB Output is correct
36 Correct 209 ms 70396 KB Output is correct
37 Correct 59 ms 63224 KB Output is correct
38 Correct 59 ms 63148 KB Output is correct
39 Correct 138 ms 69460 KB Output is correct
40 Correct 60 ms 63424 KB Output is correct
41 Correct 169 ms 69712 KB Output is correct
42 Correct 230 ms 71524 KB Output is correct
43 Correct 57 ms 62968 KB Output is correct
44 Correct 269 ms 75720 KB Output is correct
45 Correct 211 ms 72636 KB Output is correct
46 Correct 59 ms 63204 KB Output is correct
47 Correct 59 ms 63224 KB Output is correct

Subtask #4
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 136 ms 69484 KB Output is correct
2 Correct 177 ms 73300 KB Output is correct
3 Correct 61 ms 63224 KB Output is correct
4 Correct 64 ms 63340 KB Output is correct
5 Correct 65 ms 62968 KB Output is correct
6 Correct 57 ms 62968 KB Output is correct
7 Correct 59 ms 63196 KB Output is correct
8 Correct 230 ms 71436 KB Output is correct
9 Correct 60 ms 63224 KB Output is correct
10 Correct 185 ms 70460 KB Output is correct
11 Correct 57 ms 62968 KB Output is correct
12 Correct 210 ms 70364 KB Output is correct
13 Correct 265 ms 71416 KB Output is correct
14 Correct 248 ms 73052 KB Output is correct
15 Correct 174 ms 69392 KB Output is correct
16 Correct 60 ms 63316 KB Output is correct
17 Correct 58 ms 63064 KB Output is correct
18 Correct 207 ms 73044 KB Output is correct
19 Correct 230 ms 76116 KB Output is correct
20 Correct 59 ms 63352 KB Output is correct
21 Correct 57 ms 63096 KB Output is correct
22 Correct 168 ms 71832 KB Output is correct
23 Correct 60 ms 63224 KB Output is correct
24 Correct 275 ms 70648 KB Output is correct
25 Correct 280 ms 74980 KB Output is correct
26 Correct 59 ms 63352 KB Output is correct
27 Correct 70 ms 63352 KB Output is correct
28 Correct 59 ms 63224 KB Output is correct
29 Correct 69 ms 63260 KB Output is correct
30 Correct 76 ms 63236 KB Output is correct

Subtask #5
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 57 ms 62968 KB Output is correct
2 Correct 57 ms 62940 KB Output is correct
3 Correct 56 ms 62968 KB Output is correct
4 Correct 56 ms 62968 KB Output is correct
5 Correct 56 ms 62968 KB Output is correct
6 Correct 56 ms 62972 KB Output is correct
7 Correct 56 ms 62968 KB Output is correct
8 Correct 56 ms 63020 KB Output is correct
9 Correct 56 ms 63044 KB Output is correct
10 Correct 57 ms 62968 KB Output is correct
11 Correct 72 ms 63108 KB Output is correct
12 Correct 58 ms 63068 KB Output is correct
13 Correct 57 ms 62924 KB Output is correct
14 Correct 57 ms 63016 KB Output is correct
15 Correct 57 ms 62940 KB Output is correct
16 Correct 57 ms 62968 KB Output is correct
17 Correct 62 ms 62980 KB Output is correct
18 Correct 68 ms 62972 KB Output is correct
19 Correct 57 ms 62968 KB Output is correct
20 Correct 64 ms 63096 KB Output is correct
21 Correct 73 ms 62940 KB Output is correct
22 Correct 69 ms 63028 KB Output is correct
23 Correct 68 ms 62940 KB Output is correct
24 Correct 67 ms 62940 KB Output is correct
25 Correct 63 ms 63024 KB Output is correct
26 Correct 59 ms 63224 KB Output is correct
27 Correct 59 ms 63196 KB Output is correct
28 Correct 60 ms 63352 KB Output is correct
29 Correct 59 ms 63224 KB Output is correct
30 Correct 60 ms 63212 KB Output is correct
31 Correct 57 ms 62964 KB Output is correct
32 Correct 59 ms 63480 KB Output is correct
33 Correct 57 ms 62968 KB Output is correct
34 Correct 59 ms 63228 KB Output is correct
35 Correct 60 ms 63352 KB Output is correct
36 Correct 59 ms 63208 KB Output is correct
37 Correct 66 ms 63248 KB Output is correct
38 Correct 57 ms 62972 KB Output is correct
39 Correct 65 ms 63252 KB Output is correct
40 Correct 63 ms 63224 KB Output is correct
41 Correct 66 ms 63228 KB Output is correct
42 Correct 59 ms 63352 KB Output is correct
43 Correct 59 ms 63352 KB Output is correct
44 Correct 68 ms 62968 KB Output is correct
45 Correct 59 ms 63352 KB Output is correct
46 Correct 60 ms 63228 KB Output is correct
47 Correct 61 ms 62968 KB Output is correct
48 Correct 70 ms 63188 KB Output is correct
49 Correct 61 ms 63352 KB Output is correct
50 Correct 63 ms 63352 KB Output is correct
51 Correct 59 ms 63224 KB Output is correct
52 Correct 58 ms 63224 KB Output is correct
53 Correct 59 ms 63224 KB Output is correct
54 Correct 61 ms 63224 KB Output is correct
55 Correct 68 ms 62992 KB Output is correct
56 Correct 169 ms 69596 KB Output is correct
57 Correct 251 ms 69624 KB Output is correct
58 Correct 60 ms 63224 KB Output is correct
59 Correct 57 ms 62968 KB Output is correct
60 Correct 57 ms 63080 KB Output is correct
61 Correct 179 ms 69872 KB Output is correct
62 Correct 59 ms 63224 KB Output is correct
63 Correct 235 ms 75256 KB Output is correct
64 Correct 174 ms 69660 KB Output is correct
65 Correct 59 ms 63196 KB Output is correct
66 Correct 209 ms 70396 KB Output is correct
67 Correct 59 ms 63224 KB Output is correct
68 Correct 59 ms 63148 KB Output is correct
69 Correct 138 ms 69460 KB Output is correct
70 Correct 60 ms 63424 KB Output is correct
71 Correct 169 ms 69712 KB Output is correct
72 Correct 230 ms 71524 KB Output is correct
73 Correct 57 ms 62968 KB Output is correct
74 Correct 269 ms 75720 KB Output is correct
75 Correct 211 ms 72636 KB Output is correct
76 Correct 59 ms 63204 KB Output is correct
77 Correct 59 ms 63224 KB Output is correct
78 Correct 136 ms 69484 KB Output is correct
79 Correct 177 ms 73300 KB Output is correct
80 Correct 61 ms 63224 KB Output is correct
81 Correct 64 ms 63340 KB Output is correct
82 Correct 65 ms 62968 KB Output is correct
83 Correct 57 ms 62968 KB Output is correct
84 Correct 59 ms 63196 KB Output is correct
85 Correct 230 ms 71436 KB Output is correct
86 Correct 60 ms 63224 KB Output is correct
87 Correct 185 ms 70460 KB Output is correct
88 Correct 57 ms 62968 KB Output is correct
89 Correct 210 ms 70364 KB Output is correct
90 Correct 265 ms 71416 KB Output is correct
91 Correct 248 ms 73052 KB Output is correct
92 Correct 174 ms 69392 KB Output is correct
93 Correct 60 ms 63316 KB Output is correct
94 Correct 58 ms 63064 KB Output is correct
95 Correct 207 ms 73044 KB Output is correct
96 Correct 230 ms 76116 KB Output is correct
97 Correct 59 ms 63352 KB Output is correct
98 Correct 57 ms 63096 KB Output is correct
99 Correct 168 ms 71832 KB Output is correct
100 Correct 60 ms 63224 KB Output is correct
101 Correct 275 ms 70648 KB Output is correct
102 Correct 280 ms 74980 KB Output is correct
103 Correct 59 ms 63352 KB Output is correct
104 Correct 70 ms 63352 KB Output is correct
105 Correct 59 ms 63224 KB Output is correct
106 Correct 69 ms 63260 KB Output is correct
107 Correct 76 ms 63236 KB Output is correct
108 Incorrect 799 ms 99080 KB Output isn't correct
109 Halted 0 ms 0 KB -