oj.uz

Submission #138126

# Submission time Handle Problem Language Result Execution time Memory
138126 2019-07-29T11:53:06 Z Mahmoud_Adel Mergers (JOI19_mergers) C++14
70 / 100
 1518 ms 130556 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]) 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] += 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 67 ms 62968 KB Output is correct
2 Correct 57 ms 63056 KB Output is correct
3 Correct 57 ms 62968 KB Output is correct
4 Correct 57 ms 62960 KB Output is correct
5 Correct 56 ms 62968 KB Output is correct
6 Correct 56 ms 62968 KB Output is correct
7 Correct 57 ms 63096 KB Output is correct
8 Correct 57 ms 63096 KB Output is correct
9 Correct 56 ms 62968 KB Output is correct
10 Correct 57 ms 62968 KB Output is correct
11 Correct 57 ms 62968 KB Output is correct
12 Correct 63 ms 62988 KB Output is correct
13 Correct 71 ms 62968 KB Output is correct
14 Correct 57 ms 63096 KB Output is correct
15 Correct 57 ms 62968 KB Output is correct
16 Correct 57 ms 62968 KB Output is correct
17 Correct 56 ms 62968 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 55 ms 62968 KB Output is correct
22 Correct 57 ms 63096 KB Output is correct
23 Correct 57 ms 63012 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 67 ms 62968 KB Output is correct
2 Correct 57 ms 63056 KB Output is correct
3 Correct 57 ms 62968 KB Output is correct
4 Correct 57 ms 62960 KB Output is correct
5 Correct 56 ms 62968 KB Output is correct
6 Correct 56 ms 62968 KB Output is correct
7 Correct 57 ms 63096 KB Output is correct
8 Correct 57 ms 63096 KB Output is correct
9 Correct 56 ms 62968 KB Output is correct
10 Correct 57 ms 62968 KB Output is correct
11 Correct 57 ms 62968 KB Output is correct
12 Correct 63 ms 62988 KB Output is correct
13 Correct 71 ms 62968 KB Output is correct
14 Correct 57 ms 63096 KB Output is correct
15 Correct 57 ms 62968 KB Output is correct
16 Correct 57 ms 62968 KB Output is correct
17 Correct 56 ms 62968 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 55 ms 62968 KB Output is correct
22 Correct 57 ms 63096 KB Output is correct
23 Correct 57 ms 63012 KB Output is correct
24 Correct 56 ms 62968 KB Output is correct
25 Correct 57 ms 63032 KB Output is correct
26 Correct 59 ms 63224 KB Output is correct
27 Correct 70 ms 63196 KB Output is correct
28 Correct 60 ms 63392 KB Output is correct
29 Correct 59 ms 63224 KB Output is correct
30 Correct 59 ms 63228 KB Output is correct
31 Correct 56 ms 62968 KB Output is correct
32 Correct 60 ms 63480 KB Output is correct
33 Correct 56 ms 62968 KB Output is correct
34 Correct 58 ms 63224 KB Output is correct
35 Correct 59 ms 63224 KB Output is correct
36 Correct 59 ms 63224 KB Output is correct
37 Correct 60 ms 63260 KB Output is correct
38 Correct 57 ms 62968 KB Output is correct
39 Correct 59 ms 63224 KB Output is correct
40 Correct 60 ms 63224 KB Output is correct
41 Correct 62 ms 63224 KB Output is correct
42 Correct 59 ms 63268 KB Output is correct
43 Correct 70 ms 63352 KB Output is correct
44 Correct 69 ms 62940 KB Output is correct
45 Correct 64 ms 63324 KB Output is correct
46 Correct 65 ms 63324 KB Output is correct
47 Correct 66 ms 62940 KB Output is correct
48 Correct 61 ms 63224 KB Output is correct
49 Correct 59 ms 63304 KB Output is correct
50 Correct 59 ms 63372 KB Output is correct
51 Correct 59 ms 63248 KB Output is correct
52 Correct 59 ms 63224 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 67 ms 62968 KB Output is correct
2 Correct 57 ms 63056 KB Output is correct
3 Correct 57 ms 62968 KB Output is correct
4 Correct 57 ms 62960 KB Output is correct
5 Correct 56 ms 62968 KB Output is correct
6 Correct 56 ms 62968 KB Output is correct
7 Correct 57 ms 63096 KB Output is correct
8 Correct 57 ms 63096 KB Output is correct
9 Correct 56 ms 62968 KB Output is correct
10 Correct 57 ms 62968 KB Output is correct
11 Correct 57 ms 62968 KB Output is correct
12 Correct 63 ms 62988 KB Output is correct
13 Correct 71 ms 62968 KB Output is correct
14 Correct 57 ms 63096 KB Output is correct
15 Correct 57 ms 62968 KB Output is correct
16 Correct 57 ms 62968 KB Output is correct
17 Correct 56 ms 62968 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 55 ms 62968 KB Output is correct
22 Correct 57 ms 63096 KB Output is correct
23 Correct 57 ms 63012 KB Output is correct
24 Correct 56 ms 62968 KB Output is correct
25 Correct 57 ms 62968 KB Output is correct
26 Correct 140 ms 69740 KB Output is correct
27 Correct 178 ms 69872 KB Output is correct
28 Correct 59 ms 63224 KB Output is correct
29 Correct 57 ms 63096 KB Output is correct
30 Correct 68 ms 62972 KB Output is correct
31 Correct 173 ms 69992 KB Output is correct
32 Correct 59 ms 63260 KB Output is correct
33 Correct 231 ms 75564 KB Output is correct
34 Correct 174 ms 69880 KB Output is correct
35 Correct 59 ms 63224 KB Output is correct
36 Correct 215 ms 70484 KB Output is correct
37 Correct 59 ms 63352 KB Output is correct
38 Correct 59 ms 63224 KB Output is correct
39 Correct 143 ms 69528 KB Output is correct
40 Correct 60 ms 63416 KB Output is correct
41 Correct 165 ms 69648 KB Output is correct
42 Correct 206 ms 71596 KB Output is correct
43 Correct 57 ms 62968 KB Output is correct
44 Correct 249 ms 75720 KB Output is correct
45 Correct 202 ms 72824 KB Output is correct
46 Correct 59 ms 63140 KB Output is correct
47 Correct 59 ms 63228 KB Output is correct

Subtask #4
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 138 ms 69744 KB Output is correct
2 Correct 167 ms 73856 KB Output is correct
3 Correct 59 ms 63212 KB Output is correct
4 Correct 59 ms 63224 KB Output is correct
5 Correct 57 ms 62976 KB Output is correct
6 Correct 57 ms 63028 KB Output is correct
7 Correct 58 ms 63224 KB Output is correct
8 Correct 207 ms 71944 KB Output is correct
9 Correct 66 ms 63224 KB Output is correct
10 Correct 169 ms 70648 KB Output is correct
11 Correct 73 ms 62968 KB Output is correct
12 Correct 214 ms 70572 KB Output is correct
13 Correct 232 ms 71964 KB Output is correct
14 Correct 211 ms 73460 KB Output is correct
15 Correct 137 ms 69616 KB Output is correct
16 Correct 66 ms 63284 KB Output is correct
17 Correct 58 ms 63068 KB Output is correct
18 Correct 221 ms 73456 KB Output is correct
19 Correct 324 ms 76532 KB Output is correct
20 Correct 59 ms 63224 KB Output is correct
21 Correct 57 ms 63096 KB Output is correct
22 Correct 164 ms 72048 KB Output is correct
23 Correct 59 ms 63240 KB Output is correct
24 Correct 218 ms 71208 KB Output is correct
25 Correct 223 ms 75440 KB Output is correct
26 Correct 69 ms 63324 KB Output is correct
27 Correct 59 ms 63416 KB Output is correct
28 Correct 60 ms 63276 KB Output is correct
29 Correct 58 ms 63152 KB Output is correct
30 Correct 59 ms 63352 KB Output is correct

Subtask #5
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 67 ms 62968 KB Output is correct
2 Correct 57 ms 63056 KB Output is correct
3 Correct 57 ms 62968 KB Output is correct
4 Correct 57 ms 62960 KB Output is correct
5 Correct 56 ms 62968 KB Output is correct
6 Correct 56 ms 62968 KB Output is correct
7 Correct 57 ms 63096 KB Output is correct
8 Correct 57 ms 63096 KB Output is correct
9 Correct 56 ms 62968 KB Output is correct
10 Correct 57 ms 62968 KB Output is correct
11 Correct 57 ms 62968 KB Output is correct
12 Correct 63 ms 62988 KB Output is correct
13 Correct 71 ms 62968 KB Output is correct
14 Correct 57 ms 63096 KB Output is correct
15 Correct 57 ms 62968 KB Output is correct
16 Correct 57 ms 62968 KB Output is correct
17 Correct 56 ms 62968 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 55 ms 62968 KB Output is correct
22 Correct 57 ms 63096 KB Output is correct
23 Correct 57 ms 63012 KB Output is correct
24 Correct 56 ms 62968 KB Output is correct
25 Correct 57 ms 63032 KB Output is correct
26 Correct 59 ms 63224 KB Output is correct
27 Correct 70 ms 63196 KB Output is correct
28 Correct 60 ms 63392 KB Output is correct
29 Correct 59 ms 63224 KB Output is correct
30 Correct 59 ms 63228 KB Output is correct
31 Correct 56 ms 62968 KB Output is correct
32 Correct 60 ms 63480 KB Output is correct
33 Correct 56 ms 62968 KB Output is correct
34 Correct 58 ms 63224 KB Output is correct
35 Correct 59 ms 63224 KB Output is correct
36 Correct 59 ms 63224 KB Output is correct
37 Correct 60 ms 63260 KB Output is correct
38 Correct 57 ms 62968 KB Output is correct
39 Correct 59 ms 63224 KB Output is correct
40 Correct 60 ms 63224 KB Output is correct
41 Correct 62 ms 63224 KB Output is correct
42 Correct 59 ms 63268 KB Output is correct
43 Correct 70 ms 63352 KB Output is correct
44 Correct 69 ms 62940 KB Output is correct
45 Correct 64 ms 63324 KB Output is correct
46 Correct 65 ms 63324 KB Output is correct
47 Correct 66 ms 62940 KB Output is correct
48 Correct 61 ms 63224 KB Output is correct
49 Correct 59 ms 63304 KB Output is correct
50 Correct 59 ms 63372 KB Output is correct
51 Correct 59 ms 63248 KB Output is correct
52 Correct 59 ms 63224 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 62968 KB Output is correct
56 Correct 140 ms 69740 KB Output is correct
57 Correct 178 ms 69872 KB Output is correct
58 Correct 59 ms 63224 KB Output is correct
59 Correct 57 ms 63096 KB Output is correct
60 Correct 68 ms 62972 KB Output is correct
61 Correct 173 ms 69992 KB Output is correct
62 Correct 59 ms 63260 KB Output is correct
63 Correct 231 ms 75564 KB Output is correct
64 Correct 174 ms 69880 KB Output is correct
65 Correct 59 ms 63224 KB Output is correct
66 Correct 215 ms 70484 KB Output is correct
67 Correct 59 ms 63352 KB Output is correct
68 Correct 59 ms 63224 KB Output is correct
69 Correct 143 ms 69528 KB Output is correct
70 Correct 60 ms 63416 KB Output is correct
71 Correct 165 ms 69648 KB Output is correct
72 Correct 206 ms 71596 KB Output is correct
73 Correct 57 ms 62968 KB Output is correct
74 Correct 249 ms 75720 KB Output is correct
75 Correct 202 ms 72824 KB Output is correct
76 Correct 59 ms 63140 KB Output is correct
77 Correct 59 ms 63228 KB Output is correct
78 Correct 138 ms 69744 KB Output is correct
79 Correct 167 ms 73856 KB Output is correct
80 Correct 59 ms 63212 KB Output is correct
81 Correct 59 ms 63224 KB Output is correct
82 Correct 57 ms 62976 KB Output is correct
83 Correct 57 ms 63028 KB Output is correct
84 Correct 58 ms 63224 KB Output is correct
85 Correct 207 ms 71944 KB Output is correct
86 Correct 66 ms 63224 KB Output is correct
87 Correct 169 ms 70648 KB Output is correct
88 Correct 73 ms 62968 KB Output is correct
89 Correct 214 ms 70572 KB Output is correct
90 Correct 232 ms 71964 KB Output is correct
91 Correct 211 ms 73460 KB Output is correct
92 Correct 137 ms 69616 KB Output is correct
93 Correct 66 ms 63284 KB Output is correct
94 Correct 58 ms 63068 KB Output is correct
95 Correct 221 ms 73456 KB Output is correct
96 Correct 324 ms 76532 KB Output is correct
97 Correct 59 ms 63224 KB Output is correct
98 Correct 57 ms 63096 KB Output is correct
99 Correct 164 ms 72048 KB Output is correct
100 Correct 59 ms 63240 KB Output is correct
101 Correct 218 ms 71208 KB Output is correct
102 Correct 223 ms 75440 KB Output is correct
103 Correct 69 ms 63324 KB Output is correct
104 Correct 59 ms 63416 KB Output is correct
105 Correct 60 ms 63276 KB Output is correct
106 Correct 58 ms 63152 KB Output is correct
107 Correct 59 ms 63352 KB Output is correct
108 Correct 823 ms 103836 KB Output is correct
109 Correct 1310 ms 108908 KB Output is correct
110 Correct 1435 ms 118248 KB Output is correct
111 Correct 1518 ms 130556 KB Output is correct
112 Correct 1355 ms 122748 KB Output is correct
113 Correct 849 ms 112136 KB Output is correct
114 Incorrect 892 ms 95092 KB Output isn't correct
115 Halted 0 ms 0 KB -