oj.uz

Submission #138134

# Submission time Handle Problem Language Result Execution time Memory
138134 2019-07-29T11:58:52 Z Mahmoud_Adel Mergers (JOI19_mergers) C++14
70 / 100
 970 ms 195784 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]) 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

# Verdict Execution time Memory 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

# Verdict Execution time Memory 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

# Verdict Execution time Memory 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

# Verdict Execution time Memory 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

# Verdict Execution time Memory 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 -