oj.uz

Submission #138139

# Submission time Handle Problem Language Result Execution time Memory
138139 2019-07-29T12:04:39 Z Mahmoud_Adel Mergers (JOI19_mergers) C++14
70 / 100
 694 ms 191836 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][21], 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<21; 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<21; 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=20; 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();
		assert(node);
	}
	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 59 ms 65016 KB Output is correct
2 Correct 65 ms 64884 KB Output is correct
3 Correct 58 ms 65016 KB Output is correct
4 Correct 59 ms 65036 KB Output is correct
5 Correct 59 ms 65016 KB Output is correct
6 Correct 58 ms 64888 KB Output is correct
7 Correct 58 ms 64888 KB Output is correct
8 Correct 59 ms 65016 KB Output is correct
9 Correct 58 ms 64888 KB Output is correct
10 Correct 58 ms 65016 KB Output is correct
11 Correct 58 ms 64956 KB Output is correct
12 Correct 58 ms 65016 KB Output is correct
13 Correct 58 ms 64888 KB Output is correct
14 Correct 58 ms 65016 KB Output is correct
15 Correct 59 ms 65016 KB Output is correct
16 Correct 58 ms 64880 KB Output is correct
17 Correct 59 ms 65016 KB Output is correct
18 Correct 58 ms 64888 KB Output is correct
19 Correct 58 ms 64916 KB Output is correct
20 Correct 58 ms 65016 KB Output is correct
21 Correct 66 ms 65016 KB Output is correct
22 Correct 58 ms 64980 KB Output is correct
23 Correct 58 ms 65016 KB Output is correct
24 Correct 60 ms 65016 KB Output is correct

Subtask #2
24.0 / 24.0

# Verdict Execution time Memory Grader output
1 Correct 59 ms 65016 KB Output is correct
2 Correct 65 ms 64884 KB Output is correct
3 Correct 58 ms 65016 KB Output is correct
4 Correct 59 ms 65036 KB Output is correct
5 Correct 59 ms 65016 KB Output is correct
6 Correct 58 ms 64888 KB Output is correct
7 Correct 58 ms 64888 KB Output is correct
8 Correct 59 ms 65016 KB Output is correct
9 Correct 58 ms 64888 KB Output is correct
10 Correct 58 ms 65016 KB Output is correct
11 Correct 58 ms 64956 KB Output is correct
12 Correct 58 ms 65016 KB Output is correct
13 Correct 58 ms 64888 KB Output is correct
14 Correct 58 ms 65016 KB Output is correct
15 Correct 59 ms 65016 KB Output is correct
16 Correct 58 ms 64880 KB Output is correct
17 Correct 59 ms 65016 KB Output is correct
18 Correct 58 ms 64888 KB Output is correct
19 Correct 58 ms 64916 KB Output is correct
20 Correct 58 ms 65016 KB Output is correct
21 Correct 66 ms 65016 KB Output is correct
22 Correct 58 ms 64980 KB Output is correct
23 Correct 58 ms 65016 KB Output is correct
24 Correct 60 ms 65016 KB Output is correct
25 Correct 59 ms 65012 KB Output is correct
26 Correct 69 ms 65272 KB Output is correct
27 Correct 73 ms 65144 KB Output is correct
28 Correct 61 ms 65400 KB Output is correct
29 Correct 61 ms 65148 KB Output is correct
30 Correct 61 ms 65144 KB Output is correct
31 Correct 58 ms 65016 KB Output is correct
32 Correct 61 ms 65400 KB Output is correct
33 Correct 58 ms 65016 KB Output is correct
34 Correct 64 ms 65144 KB Output is correct
35 Correct 62 ms 65144 KB Output is correct
36 Correct 61 ms 65144 KB Output is correct
37 Correct 61 ms 65140 KB Output is correct
38 Correct 58 ms 64892 KB Output is correct
39 Correct 61 ms 65144 KB Output is correct
40 Correct 60 ms 65144 KB Output is correct
41 Correct 61 ms 65144 KB Output is correct
42 Correct 60 ms 65144 KB Output is correct
43 Correct 61 ms 65272 KB Output is correct
44 Correct 66 ms 65016 KB Output is correct
45 Correct 61 ms 65276 KB Output is correct
46 Correct 61 ms 65200 KB Output is correct
47 Correct 58 ms 65020 KB Output is correct
48 Correct 61 ms 65144 KB Output is correct
49 Correct 60 ms 65196 KB Output is correct
50 Correct 61 ms 65272 KB Output is correct
51 Correct 61 ms 65144 KB Output is correct
52 Correct 60 ms 65144 KB Output is correct
53 Correct 60 ms 65096 KB Output is correct
54 Correct 61 ms 65144 KB Output is correct

Subtask #3
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 59 ms 65016 KB Output is correct
2 Correct 65 ms 64884 KB Output is correct
3 Correct 58 ms 65016 KB Output is correct
4 Correct 59 ms 65036 KB Output is correct
5 Correct 59 ms 65016 KB Output is correct
6 Correct 58 ms 64888 KB Output is correct
7 Correct 58 ms 64888 KB Output is correct
8 Correct 59 ms 65016 KB Output is correct
9 Correct 58 ms 64888 KB Output is correct
10 Correct 58 ms 65016 KB Output is correct
11 Correct 58 ms 64956 KB Output is correct
12 Correct 58 ms 65016 KB Output is correct
13 Correct 58 ms 64888 KB Output is correct
14 Correct 58 ms 65016 KB Output is correct
15 Correct 59 ms 65016 KB Output is correct
16 Correct 58 ms 64880 KB Output is correct
17 Correct 59 ms 65016 KB Output is correct
18 Correct 58 ms 64888 KB Output is correct
19 Correct 58 ms 64916 KB Output is correct
20 Correct 58 ms 65016 KB Output is correct
21 Correct 66 ms 65016 KB Output is correct
22 Correct 58 ms 64980 KB Output is correct
23 Correct 58 ms 65016 KB Output is correct
24 Correct 60 ms 65016 KB Output is correct
25 Correct 58 ms 64888 KB Output is correct
26 Correct 138 ms 70256 KB Output is correct
27 Correct 178 ms 70264 KB Output is correct
28 Correct 63 ms 65144 KB Output is correct
29 Correct 58 ms 64992 KB Output is correct
30 Correct 58 ms 65016 KB Output is correct
31 Correct 186 ms 70520 KB Output is correct
32 Correct 61 ms 65144 KB Output is correct
33 Correct 238 ms 75944 KB Output is correct
34 Correct 181 ms 70264 KB Output is correct
35 Correct 61 ms 65144 KB Output is correct
36 Correct 301 ms 71124 KB Output is correct
37 Correct 73 ms 65144 KB Output is correct
38 Correct 62 ms 65144 KB Output is correct
39 Correct 180 ms 70120 KB Output is correct
40 Correct 77 ms 65272 KB Output is correct
41 Correct 248 ms 70228 KB Output is correct
42 Correct 220 ms 72380 KB Output is correct
43 Correct 58 ms 65016 KB Output is correct
44 Correct 233 ms 76416 KB Output is correct
45 Correct 222 ms 73180 KB Output is correct
46 Correct 60 ms 65144 KB Output is correct
47 Correct 60 ms 65152 KB Output is correct

Subtask #4
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 139 ms 70128 KB Output is correct
2 Correct 177 ms 73900 KB Output is correct
3 Correct 72 ms 65200 KB Output is correct
4 Correct 72 ms 65144 KB Output is correct
5 Correct 58 ms 64888 KB Output is correct
6 Correct 66 ms 64988 KB Output is correct
7 Correct 59 ms 65144 KB Output is correct
8 Correct 193 ms 72184 KB Output is correct
9 Correct 61 ms 65140 KB Output is correct
10 Correct 180 ms 71100 KB Output is correct
11 Correct 59 ms 64888 KB Output is correct
12 Correct 211 ms 71068 KB Output is correct
13 Correct 207 ms 72048 KB Output is correct
14 Correct 239 ms 73720 KB Output is correct
15 Correct 145 ms 70144 KB Output is correct
16 Correct 60 ms 65148 KB Output is correct
17 Correct 59 ms 64996 KB Output is correct
18 Correct 169 ms 73704 KB Output is correct
19 Correct 345 ms 76912 KB Output is correct
20 Correct 77 ms 65144 KB Output is correct
21 Correct 73 ms 64912 KB Output is correct
22 Correct 221 ms 72428 KB Output is correct
23 Correct 74 ms 65116 KB Output is correct
24 Correct 295 ms 71388 KB Output is correct
25 Correct 274 ms 75740 KB Output is correct
26 Correct 61 ms 65272 KB Output is correct
27 Correct 61 ms 65184 KB Output is correct
28 Correct 61 ms 65068 KB Output is correct
29 Correct 60 ms 65148 KB Output is correct
30 Correct 60 ms 65144 KB Output is correct

Subtask #5
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 59 ms 65016 KB Output is correct
2 Correct 65 ms 64884 KB Output is correct
3 Correct 58 ms 65016 KB Output is correct
4 Correct 59 ms 65036 KB Output is correct
5 Correct 59 ms 65016 KB Output is correct
6 Correct 58 ms 64888 KB Output is correct
7 Correct 58 ms 64888 KB Output is correct
8 Correct 59 ms 65016 KB Output is correct
9 Correct 58 ms 64888 KB Output is correct
10 Correct 58 ms 65016 KB Output is correct
11 Correct 58 ms 64956 KB Output is correct
12 Correct 58 ms 65016 KB Output is correct
13 Correct 58 ms 64888 KB Output is correct
14 Correct 58 ms 65016 KB Output is correct
15 Correct 59 ms 65016 KB Output is correct
16 Correct 58 ms 64880 KB Output is correct
17 Correct 59 ms 65016 KB Output is correct
18 Correct 58 ms 64888 KB Output is correct
19 Correct 58 ms 64916 KB Output is correct
20 Correct 58 ms 65016 KB Output is correct
21 Correct 66 ms 65016 KB Output is correct
22 Correct 58 ms 64980 KB Output is correct
23 Correct 58 ms 65016 KB Output is correct
24 Correct 60 ms 65016 KB Output is correct
25 Correct 59 ms 65012 KB Output is correct
26 Correct 69 ms 65272 KB Output is correct
27 Correct 73 ms 65144 KB Output is correct
28 Correct 61 ms 65400 KB Output is correct
29 Correct 61 ms 65148 KB Output is correct
30 Correct 61 ms 65144 KB Output is correct
31 Correct 58 ms 65016 KB Output is correct
32 Correct 61 ms 65400 KB Output is correct
33 Correct 58 ms 65016 KB Output is correct
34 Correct 64 ms 65144 KB Output is correct
35 Correct 62 ms 65144 KB Output is correct
36 Correct 61 ms 65144 KB Output is correct
37 Correct 61 ms 65140 KB Output is correct
38 Correct 58 ms 64892 KB Output is correct
39 Correct 61 ms 65144 KB Output is correct
40 Correct 60 ms 65144 KB Output is correct
41 Correct 61 ms 65144 KB Output is correct
42 Correct 60 ms 65144 KB Output is correct
43 Correct 61 ms 65272 KB Output is correct
44 Correct 66 ms 65016 KB Output is correct
45 Correct 61 ms 65276 KB Output is correct
46 Correct 61 ms 65200 KB Output is correct
47 Correct 58 ms 65020 KB Output is correct
48 Correct 61 ms 65144 KB Output is correct
49 Correct 60 ms 65196 KB Output is correct
50 Correct 61 ms 65272 KB Output is correct
51 Correct 61 ms 65144 KB Output is correct
52 Correct 60 ms 65144 KB Output is correct
53 Correct 60 ms 65096 KB Output is correct
54 Correct 61 ms 65144 KB Output is correct
55 Correct 58 ms 64888 KB Output is correct
56 Correct 138 ms 70256 KB Output is correct
57 Correct 178 ms 70264 KB Output is correct
58 Correct 63 ms 65144 KB Output is correct
59 Correct 58 ms 64992 KB Output is correct
60 Correct 58 ms 65016 KB Output is correct
61 Correct 186 ms 70520 KB Output is correct
62 Correct 61 ms 65144 KB Output is correct
63 Correct 238 ms 75944 KB Output is correct
64 Correct 181 ms 70264 KB Output is correct
65 Correct 61 ms 65144 KB Output is correct
66 Correct 301 ms 71124 KB Output is correct
67 Correct 73 ms 65144 KB Output is correct
68 Correct 62 ms 65144 KB Output is correct
69 Correct 180 ms 70120 KB Output is correct
70 Correct 77 ms 65272 KB Output is correct
71 Correct 248 ms 70228 KB Output is correct
72 Correct 220 ms 72380 KB Output is correct
73 Correct 58 ms 65016 KB Output is correct
74 Correct 233 ms 76416 KB Output is correct
75 Correct 222 ms 73180 KB Output is correct
76 Correct 60 ms 65144 KB Output is correct
77 Correct 60 ms 65152 KB Output is correct
78 Correct 139 ms 70128 KB Output is correct
79 Correct 177 ms 73900 KB Output is correct
80 Correct 72 ms 65200 KB Output is correct
81 Correct 72 ms 65144 KB Output is correct
82 Correct 58 ms 64888 KB Output is correct
83 Correct 66 ms 64988 KB Output is correct
84 Correct 59 ms 65144 KB Output is correct
85 Correct 193 ms 72184 KB Output is correct
86 Correct 61 ms 65140 KB Output is correct
87 Correct 180 ms 71100 KB Output is correct
88 Correct 59 ms 64888 KB Output is correct
89 Correct 211 ms 71068 KB Output is correct
90 Correct 207 ms 72048 KB Output is correct
91 Correct 239 ms 73720 KB Output is correct
92 Correct 145 ms 70144 KB Output is correct
93 Correct 60 ms 65148 KB Output is correct
94 Correct 59 ms 64996 KB Output is correct
95 Correct 169 ms 73704 KB Output is correct
96 Correct 345 ms 76912 KB Output is correct
97 Correct 77 ms 65144 KB Output is correct
98 Correct 73 ms 64912 KB Output is correct
99 Correct 221 ms 72428 KB Output is correct
100 Correct 74 ms 65116 KB Output is correct
101 Correct 295 ms 71388 KB Output is correct
102 Correct 274 ms 75740 KB Output is correct
103 Correct 61 ms 65272 KB Output is correct
104 Correct 61 ms 65184 KB Output is correct
105 Correct 61 ms 65068 KB Output is correct
106 Correct 60 ms 65148 KB Output is correct
107 Correct 60 ms 65144 KB Output is correct
108 Runtime error 694 ms 191836 KB Execution killed with signal 11 (could be triggered by violating memory limits)
109 Halted 0 ms 0 KB -