oj.uz

Submission #138105

# Submission time Handle Problem Language Result Execution time Memory
138105 2019-07-29T10:59:06 Z Mahmoud_Adel Mergers (JOI19_mergers) C++14
70 / 100
 1453 ms 125048 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)
{
	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();
	}
	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: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 57 ms 62972 KB Output is correct
2 Correct 56 ms 62968 KB Output is correct
3 Correct 56 ms 62968 KB Output is correct
4 Correct 56 ms 62968 KB Output is correct
5 Correct 58 ms 62968 KB Output is correct
6 Correct 57 ms 62968 KB Output is correct
7 Correct 57 ms 62968 KB Output is correct
8 Correct 56 ms 63008 KB Output is correct
9 Correct 57 ms 62976 KB Output is correct
10 Correct 56 ms 62968 KB Output is correct
11 Correct 57 ms 63100 KB Output is correct
12 Correct 57 ms 62932 KB Output is correct
13 Correct 56 ms 62968 KB Output is correct
14 Correct 57 ms 62968 KB Output is correct
15 Correct 57 ms 62968 KB Output is correct
16 Correct 57 ms 62968 KB Output is correct
17 Correct 58 ms 62952 KB Output is correct
18 Correct 57 ms 62968 KB Output is correct
19 Correct 57 ms 62968 KB Output is correct
20 Correct 57 ms 62968 KB Output is correct
21 Correct 57 ms 63016 KB Output is correct
22 Correct 56 ms 62968 KB Output is correct
23 Correct 57 ms 62968 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 62972 KB Output is correct
2 Correct 56 ms 62968 KB Output is correct
3 Correct 56 ms 62968 KB Output is correct
4 Correct 56 ms 62968 KB Output is correct
5 Correct 58 ms 62968 KB Output is correct
6 Correct 57 ms 62968 KB Output is correct
7 Correct 57 ms 62968 KB Output is correct
8 Correct 56 ms 63008 KB Output is correct
9 Correct 57 ms 62976 KB Output is correct
10 Correct 56 ms 62968 KB Output is correct
11 Correct 57 ms 63100 KB Output is correct
12 Correct 57 ms 62932 KB Output is correct
13 Correct 56 ms 62968 KB Output is correct
14 Correct 57 ms 62968 KB Output is correct
15 Correct 57 ms 62968 KB Output is correct
16 Correct 57 ms 62968 KB Output is correct
17 Correct 58 ms 62952 KB Output is correct
18 Correct 57 ms 62968 KB Output is correct
19 Correct 57 ms 62968 KB Output is correct
20 Correct 57 ms 62968 KB Output is correct
21 Correct 57 ms 63016 KB Output is correct
22 Correct 56 ms 62968 KB Output is correct
23 Correct 57 ms 62968 KB Output is correct
24 Correct 56 ms 62968 KB Output is correct
25 Correct 57 ms 62996 KB Output is correct
26 Correct 69 ms 63224 KB Output is correct
27 Correct 68 ms 63196 KB Output is correct
28 Correct 117 ms 63352 KB Output is correct
29 Correct 61 ms 63280 KB Output is correct
30 Correct 60 ms 63096 KB Output is correct
31 Correct 57 ms 62968 KB Output is correct
32 Correct 60 ms 63352 KB Output is correct
33 Correct 57 ms 63016 KB Output is correct
34 Correct 58 ms 63196 KB Output is correct
35 Correct 58 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 57 ms 62968 KB Output is correct
39 Correct 59 ms 63224 KB Output is correct
40 Correct 58 ms 63224 KB Output is correct
41 Correct 64 ms 63224 KB Output is correct
42 Correct 62 ms 63224 KB Output is correct
43 Correct 65 ms 63340 KB Output is correct
44 Correct 62 ms 62968 KB Output is correct
45 Correct 59 ms 63316 KB Output is correct
46 Correct 59 ms 63228 KB Output is correct
47 Correct 56 ms 62968 KB Output is correct
48 Correct 60 ms 63224 KB Output is correct
49 Correct 59 ms 63224 KB Output is correct
50 Correct 61 ms 63392 KB Output is correct
51 Correct 60 ms 63352 KB Output is correct
52 Correct 58 ms 63224 KB Output is correct
53 Correct 59 ms 63224 KB Output is correct
54 Correct 58 ms 63096 KB Output is correct

Subtask #3
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 57 ms 62972 KB Output is correct
2 Correct 56 ms 62968 KB Output is correct
3 Correct 56 ms 62968 KB Output is correct
4 Correct 56 ms 62968 KB Output is correct
5 Correct 58 ms 62968 KB Output is correct
6 Correct 57 ms 62968 KB Output is correct
7 Correct 57 ms 62968 KB Output is correct
8 Correct 56 ms 63008 KB Output is correct
9 Correct 57 ms 62976 KB Output is correct
10 Correct 56 ms 62968 KB Output is correct
11 Correct 57 ms 63100 KB Output is correct
12 Correct 57 ms 62932 KB Output is correct
13 Correct 56 ms 62968 KB Output is correct
14 Correct 57 ms 62968 KB Output is correct
15 Correct 57 ms 62968 KB Output is correct
16 Correct 57 ms 62968 KB Output is correct
17 Correct 58 ms 62952 KB Output is correct
18 Correct 57 ms 62968 KB Output is correct
19 Correct 57 ms 62968 KB Output is correct
20 Correct 57 ms 62968 KB Output is correct
21 Correct 57 ms 63016 KB Output is correct
22 Correct 56 ms 62968 KB Output is correct
23 Correct 57 ms 62968 KB Output is correct
24 Correct 56 ms 62968 KB Output is correct
25 Correct 57 ms 62940 KB Output is correct
26 Correct 138 ms 68304 KB Output is correct
27 Correct 168 ms 68452 KB Output is correct
28 Correct 60 ms 63352 KB Output is correct
29 Correct 57 ms 62944 KB Output is correct
30 Correct 57 ms 62968 KB Output is correct
31 Correct 172 ms 68572 KB Output is correct
32 Correct 58 ms 63196 KB Output is correct
33 Correct 214 ms 74152 KB Output is correct
34 Correct 176 ms 68344 KB Output is correct
35 Correct 58 ms 63224 KB Output is correct
36 Correct 213 ms 69112 KB Output is correct
37 Correct 59 ms 63096 KB Output is correct
38 Correct 59 ms 63352 KB Output is correct
39 Correct 139 ms 68336 KB Output is correct
40 Correct 59 ms 63356 KB Output is correct
41 Correct 174 ms 68340 KB Output is correct
42 Correct 287 ms 70116 KB Output is correct
43 Correct 66 ms 62968 KB Output is correct
44 Correct 298 ms 74196 KB Output is correct
45 Correct 206 ms 71416 KB Output is correct
46 Correct 59 ms 63128 KB Output is correct
47 Correct 59 ms 63128 KB Output is correct

Subtask #4
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 142 ms 68204 KB Output is correct
2 Correct 177 ms 72048 KB Output is correct
3 Correct 70 ms 63228 KB Output is correct
4 Correct 60 ms 63224 KB Output is correct
5 Correct 58 ms 63096 KB Output is correct
6 Correct 57 ms 63096 KB Output is correct
7 Correct 59 ms 63228 KB Output is correct
8 Correct 205 ms 70136 KB Output is correct
9 Correct 59 ms 63224 KB Output is correct
10 Correct 182 ms 69344 KB Output is correct
11 Correct 57 ms 62968 KB Output is correct
12 Correct 224 ms 69112 KB Output is correct
13 Correct 221 ms 70052 KB Output is correct
14 Correct 229 ms 71800 KB Output is correct
15 Correct 164 ms 68252 KB Output is correct
16 Correct 63 ms 63224 KB Output is correct
17 Correct 66 ms 62968 KB Output is correct
18 Correct 196 ms 71792 KB Output is correct
19 Correct 258 ms 74844 KB Output is correct
20 Correct 60 ms 63196 KB Output is correct
21 Correct 57 ms 63100 KB Output is correct
22 Correct 163 ms 70392 KB Output is correct
23 Correct 60 ms 63224 KB Output is correct
24 Correct 214 ms 69496 KB Output is correct
25 Correct 214 ms 73824 KB Output is correct
26 Correct 59 ms 63224 KB Output is correct
27 Correct 59 ms 63352 KB Output is correct
28 Correct 59 ms 63224 KB Output is correct
29 Correct 58 ms 63224 KB Output is correct
30 Correct 70 ms 63352 KB Output is correct

Subtask #5
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 57 ms 62972 KB Output is correct
2 Correct 56 ms 62968 KB Output is correct
3 Correct 56 ms 62968 KB Output is correct
4 Correct 56 ms 62968 KB Output is correct
5 Correct 58 ms 62968 KB Output is correct
6 Correct 57 ms 62968 KB Output is correct
7 Correct 57 ms 62968 KB Output is correct
8 Correct 56 ms 63008 KB Output is correct
9 Correct 57 ms 62976 KB Output is correct
10 Correct 56 ms 62968 KB Output is correct
11 Correct 57 ms 63100 KB Output is correct
12 Correct 57 ms 62932 KB Output is correct
13 Correct 56 ms 62968 KB Output is correct
14 Correct 57 ms 62968 KB Output is correct
15 Correct 57 ms 62968 KB Output is correct
16 Correct 57 ms 62968 KB Output is correct
17 Correct 58 ms 62952 KB Output is correct
18 Correct 57 ms 62968 KB Output is correct
19 Correct 57 ms 62968 KB Output is correct
20 Correct 57 ms 62968 KB Output is correct
21 Correct 57 ms 63016 KB Output is correct
22 Correct 56 ms 62968 KB Output is correct
23 Correct 57 ms 62968 KB Output is correct
24 Correct 56 ms 62968 KB Output is correct
25 Correct 57 ms 62996 KB Output is correct
26 Correct 69 ms 63224 KB Output is correct
27 Correct 68 ms 63196 KB Output is correct
28 Correct 117 ms 63352 KB Output is correct
29 Correct 61 ms 63280 KB Output is correct
30 Correct 60 ms 63096 KB Output is correct
31 Correct 57 ms 62968 KB Output is correct
32 Correct 60 ms 63352 KB Output is correct
33 Correct 57 ms 63016 KB Output is correct
34 Correct 58 ms 63196 KB Output is correct
35 Correct 58 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 57 ms 62968 KB Output is correct
39 Correct 59 ms 63224 KB Output is correct
40 Correct 58 ms 63224 KB Output is correct
41 Correct 64 ms 63224 KB Output is correct
42 Correct 62 ms 63224 KB Output is correct
43 Correct 65 ms 63340 KB Output is correct
44 Correct 62 ms 62968 KB Output is correct
45 Correct 59 ms 63316 KB Output is correct
46 Correct 59 ms 63228 KB Output is correct
47 Correct 56 ms 62968 KB Output is correct
48 Correct 60 ms 63224 KB Output is correct
49 Correct 59 ms 63224 KB Output is correct
50 Correct 61 ms 63392 KB Output is correct
51 Correct 60 ms 63352 KB Output is correct
52 Correct 58 ms 63224 KB Output is correct
53 Correct 59 ms 63224 KB Output is correct
54 Correct 58 ms 63096 KB Output is correct
55 Correct 57 ms 62940 KB Output is correct
56 Correct 138 ms 68304 KB Output is correct
57 Correct 168 ms 68452 KB Output is correct
58 Correct 60 ms 63352 KB Output is correct
59 Correct 57 ms 62944 KB Output is correct
60 Correct 57 ms 62968 KB Output is correct
61 Correct 172 ms 68572 KB Output is correct
62 Correct 58 ms 63196 KB Output is correct
63 Correct 214 ms 74152 KB Output is correct
64 Correct 176 ms 68344 KB Output is correct
65 Correct 58 ms 63224 KB Output is correct
66 Correct 213 ms 69112 KB Output is correct
67 Correct 59 ms 63096 KB Output is correct
68 Correct 59 ms 63352 KB Output is correct
69 Correct 139 ms 68336 KB Output is correct
70 Correct 59 ms 63356 KB Output is correct
71 Correct 174 ms 68340 KB Output is correct
72 Correct 287 ms 70116 KB Output is correct
73 Correct 66 ms 62968 KB Output is correct
74 Correct 298 ms 74196 KB Output is correct
75 Correct 206 ms 71416 KB Output is correct
76 Correct 59 ms 63128 KB Output is correct
77 Correct 59 ms 63128 KB Output is correct
78 Correct 142 ms 68204 KB Output is correct
79 Correct 177 ms 72048 KB Output is correct
80 Correct 70 ms 63228 KB Output is correct
81 Correct 60 ms 63224 KB Output is correct
82 Correct 58 ms 63096 KB Output is correct
83 Correct 57 ms 63096 KB Output is correct
84 Correct 59 ms 63228 KB Output is correct
85 Correct 205 ms 70136 KB Output is correct
86 Correct 59 ms 63224 KB Output is correct
87 Correct 182 ms 69344 KB Output is correct
88 Correct 57 ms 62968 KB Output is correct
89 Correct 224 ms 69112 KB Output is correct
90 Correct 221 ms 70052 KB Output is correct
91 Correct 229 ms 71800 KB Output is correct
92 Correct 164 ms 68252 KB Output is correct
93 Correct 63 ms 63224 KB Output is correct
94 Correct 66 ms 62968 KB Output is correct
95 Correct 196 ms 71792 KB Output is correct
96 Correct 258 ms 74844 KB Output is correct
97 Correct 60 ms 63196 KB Output is correct
98 Correct 57 ms 63100 KB Output is correct
99 Correct 163 ms 70392 KB Output is correct
100 Correct 60 ms 63224 KB Output is correct
101 Correct 214 ms 69496 KB Output is correct
102 Correct 214 ms 73824 KB Output is correct
103 Correct 59 ms 63224 KB Output is correct
104 Correct 59 ms 63352 KB Output is correct
105 Correct 59 ms 63224 KB Output is correct
106 Correct 58 ms 63224 KB Output is correct
107 Correct 70 ms 63352 KB Output is correct
108 Correct 799 ms 98892 KB Output is correct
109 Correct 1357 ms 103352 KB Output is correct
110 Correct 1370 ms 112564 KB Output is correct
111 Correct 1453 ms 125048 KB Output is correct
112 Correct 1369 ms 117340 KB Output is correct
113 Correct 857 ms 106480 KB Output is correct
114 Incorrect 887 ms 89316 KB Output isn't correct
115 Halted 0 ms 0 KB -