oj.uz

Submission #138138

# Submission time Handle Problem Language Result Execution time Memory
138138 2019-07-29T12:03:40 Z Mahmoud_Adel Mergers (JOI19_mergers) C++14
70 / 100
 1651 ms 127088 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]) 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 65016 KB Output is correct
2 Correct 64 ms 64968 KB Output is correct
3 Correct 62 ms 64888 KB Output is correct
4 Correct 71 ms 64996 KB Output is correct
5 Correct 61 ms 65012 KB Output is correct
6 Correct 59 ms 65016 KB Output is correct
7 Correct 60 ms 64888 KB Output is correct
8 Correct 65 ms 65004 KB Output is correct
9 Correct 58 ms 64888 KB Output is correct
10 Correct 67 ms 65016 KB Output is correct
11 Correct 63 ms 65020 KB Output is correct
12 Correct 58 ms 64980 KB Output is correct
13 Correct 58 ms 64888 KB Output is correct
14 Correct 59 ms 65016 KB Output is correct
15 Correct 59 ms 64932 KB Output is correct
16 Correct 61 ms 64888 KB Output is correct
17 Correct 63 ms 64888 KB Output is correct
18 Correct 63 ms 64980 KB Output is correct
19 Correct 57 ms 64884 KB Output is correct
20 Correct 63 ms 65016 KB Output is correct
21 Correct 58 ms 65056 KB Output is correct
22 Correct 58 ms 64888 KB Output is correct
23 Correct 64 ms 65008 KB Output is correct
24 Correct 58 ms 65016 KB Output is correct

Subtask #2
24.0 / 24.0

# Verdict Execution time Memory Grader output
1 Correct 57 ms 65016 KB Output is correct
2 Correct 64 ms 64968 KB Output is correct
3 Correct 62 ms 64888 KB Output is correct
4 Correct 71 ms 64996 KB Output is correct
5 Correct 61 ms 65012 KB Output is correct
6 Correct 59 ms 65016 KB Output is correct
7 Correct 60 ms 64888 KB Output is correct
8 Correct 65 ms 65004 KB Output is correct
9 Correct 58 ms 64888 KB Output is correct
10 Correct 67 ms 65016 KB Output is correct
11 Correct 63 ms 65020 KB Output is correct
12 Correct 58 ms 64980 KB Output is correct
13 Correct 58 ms 64888 KB Output is correct
14 Correct 59 ms 65016 KB Output is correct
15 Correct 59 ms 64932 KB Output is correct
16 Correct 61 ms 64888 KB Output is correct
17 Correct 63 ms 64888 KB Output is correct
18 Correct 63 ms 64980 KB Output is correct
19 Correct 57 ms 64884 KB Output is correct
20 Correct 63 ms 65016 KB Output is correct
21 Correct 58 ms 65056 KB Output is correct
22 Correct 58 ms 64888 KB Output is correct
23 Correct 64 ms 65008 KB Output is correct
24 Correct 58 ms 65016 KB Output is correct
25 Correct 60 ms 64932 KB Output is correct
26 Correct 61 ms 65332 KB Output is correct
27 Correct 60 ms 65144 KB Output is correct
28 Correct 62 ms 65440 KB Output is correct
29 Correct 60 ms 65272 KB Output is correct
30 Correct 62 ms 65140 KB Output is correct
31 Correct 58 ms 64952 KB Output is correct
32 Correct 61 ms 65272 KB Output is correct
33 Correct 58 ms 64972 KB Output is correct
34 Correct 60 ms 65144 KB Output is correct
35 Correct 60 ms 65244 KB Output is correct
36 Correct 61 ms 65144 KB Output is correct
37 Correct 61 ms 65176 KB Output is correct
38 Correct 58 ms 65016 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 65116 KB Output is correct
42 Correct 60 ms 65116 KB Output is correct
43 Correct 61 ms 65272 KB Output is correct
44 Correct 58 ms 64888 KB Output is correct
45 Correct 61 ms 65272 KB Output is correct
46 Correct 60 ms 65144 KB Output is correct
47 Correct 60 ms 64928 KB Output is correct
48 Correct 61 ms 65144 KB Output is correct
49 Correct 60 ms 65144 KB Output is correct
50 Correct 61 ms 65216 KB Output is correct
51 Correct 62 ms 65144 KB Output is correct
52 Correct 60 ms 65144 KB Output is correct
53 Correct 61 ms 65244 KB Output is correct
54 Correct 60 ms 65116 KB Output is correct

Subtask #3
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 57 ms 65016 KB Output is correct
2 Correct 64 ms 64968 KB Output is correct
3 Correct 62 ms 64888 KB Output is correct
4 Correct 71 ms 64996 KB Output is correct
5 Correct 61 ms 65012 KB Output is correct
6 Correct 59 ms 65016 KB Output is correct
7 Correct 60 ms 64888 KB Output is correct
8 Correct 65 ms 65004 KB Output is correct
9 Correct 58 ms 64888 KB Output is correct
10 Correct 67 ms 65016 KB Output is correct
11 Correct 63 ms 65020 KB Output is correct
12 Correct 58 ms 64980 KB Output is correct
13 Correct 58 ms 64888 KB Output is correct
14 Correct 59 ms 65016 KB Output is correct
15 Correct 59 ms 64932 KB Output is correct
16 Correct 61 ms 64888 KB Output is correct
17 Correct 63 ms 64888 KB Output is correct
18 Correct 63 ms 64980 KB Output is correct
19 Correct 57 ms 64884 KB Output is correct
20 Correct 63 ms 65016 KB Output is correct
21 Correct 58 ms 65056 KB Output is correct
22 Correct 58 ms 64888 KB Output is correct
23 Correct 64 ms 65008 KB Output is correct
24 Correct 58 ms 65016 KB Output is correct
25 Correct 70 ms 65028 KB Output is correct
26 Correct 147 ms 70268 KB Output is correct
27 Correct 186 ms 70308 KB Output is correct
28 Correct 61 ms 65144 KB Output is correct
29 Correct 58 ms 64888 KB Output is correct
30 Correct 67 ms 65016 KB Output is correct
31 Correct 181 ms 70520 KB Output is correct
32 Correct 60 ms 65144 KB Output is correct
33 Correct 270 ms 76016 KB Output is correct
34 Correct 181 ms 70340 KB Output is correct
35 Correct 60 ms 65144 KB Output is correct
36 Correct 212 ms 71032 KB Output is correct
37 Correct 60 ms 65144 KB Output is correct
38 Correct 61 ms 65144 KB Output is correct
39 Correct 147 ms 70092 KB Output is correct
40 Correct 61 ms 65344 KB Output is correct
41 Correct 185 ms 70448 KB Output is correct
42 Correct 224 ms 72184 KB Output is correct
43 Correct 58 ms 64888 KB Output is correct
44 Correct 241 ms 76148 KB Output is correct
45 Correct 257 ms 73340 KB Output is correct
46 Correct 60 ms 65144 KB Output is correct
47 Correct 61 ms 65272 KB Output is correct

Subtask #4
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 141 ms 70212 KB Output is correct
2 Correct 169 ms 73968 KB Output is correct
3 Correct 62 ms 65116 KB Output is correct
4 Correct 65 ms 65280 KB Output is correct
5 Correct 58 ms 64888 KB Output is correct
6 Correct 58 ms 65016 KB Output is correct
7 Correct 60 ms 65064 KB Output is correct
8 Correct 211 ms 72248 KB Output is correct
9 Correct 60 ms 65144 KB Output is correct
10 Correct 179 ms 71120 KB Output is correct
11 Correct 58 ms 64888 KB Output is correct
12 Correct 226 ms 71076 KB Output is correct
13 Correct 223 ms 72076 KB Output is correct
14 Correct 215 ms 73592 KB Output is correct
15 Correct 153 ms 70092 KB Output is correct
16 Correct 61 ms 65144 KB Output is correct
17 Correct 65 ms 64952 KB Output is correct
18 Correct 169 ms 73584 KB Output is correct
19 Correct 296 ms 76856 KB Output is correct
20 Correct 72 ms 65144 KB Output is correct
21 Correct 70 ms 64988 KB Output is correct
22 Correct 224 ms 72536 KB Output is correct
23 Correct 62 ms 65272 KB Output is correct
24 Correct 223 ms 71544 KB Output is correct
25 Correct 239 ms 75660 KB Output is correct
26 Correct 61 ms 65272 KB Output is correct
27 Correct 62 ms 65272 KB Output is correct
28 Correct 61 ms 65144 KB Output is correct
29 Correct 61 ms 65144 KB Output is correct
30 Correct 74 ms 65144 KB Output is correct

Subtask #5
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 57 ms 65016 KB Output is correct
2 Correct 64 ms 64968 KB Output is correct
3 Correct 62 ms 64888 KB Output is correct
4 Correct 71 ms 64996 KB Output is correct
5 Correct 61 ms 65012 KB Output is correct
6 Correct 59 ms 65016 KB Output is correct
7 Correct 60 ms 64888 KB Output is correct
8 Correct 65 ms 65004 KB Output is correct
9 Correct 58 ms 64888 KB Output is correct
10 Correct 67 ms 65016 KB Output is correct
11 Correct 63 ms 65020 KB Output is correct
12 Correct 58 ms 64980 KB Output is correct
13 Correct 58 ms 64888 KB Output is correct
14 Correct 59 ms 65016 KB Output is correct
15 Correct 59 ms 64932 KB Output is correct
16 Correct 61 ms 64888 KB Output is correct
17 Correct 63 ms 64888 KB Output is correct
18 Correct 63 ms 64980 KB Output is correct
19 Correct 57 ms 64884 KB Output is correct
20 Correct 63 ms 65016 KB Output is correct
21 Correct 58 ms 65056 KB Output is correct
22 Correct 58 ms 64888 KB Output is correct
23 Correct 64 ms 65008 KB Output is correct
24 Correct 58 ms 65016 KB Output is correct
25 Correct 60 ms 64932 KB Output is correct
26 Correct 61 ms 65332 KB Output is correct
27 Correct 60 ms 65144 KB Output is correct
28 Correct 62 ms 65440 KB Output is correct
29 Correct 60 ms 65272 KB Output is correct
30 Correct 62 ms 65140 KB Output is correct
31 Correct 58 ms 64952 KB Output is correct
32 Correct 61 ms 65272 KB Output is correct
33 Correct 58 ms 64972 KB Output is correct
34 Correct 60 ms 65144 KB Output is correct
35 Correct 60 ms 65244 KB Output is correct
36 Correct 61 ms 65144 KB Output is correct
37 Correct 61 ms 65176 KB Output is correct
38 Correct 58 ms 65016 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 65116 KB Output is correct
42 Correct 60 ms 65116 KB Output is correct
43 Correct 61 ms 65272 KB Output is correct
44 Correct 58 ms 64888 KB Output is correct
45 Correct 61 ms 65272 KB Output is correct
46 Correct 60 ms 65144 KB Output is correct
47 Correct 60 ms 64928 KB Output is correct
48 Correct 61 ms 65144 KB Output is correct
49 Correct 60 ms 65144 KB Output is correct
50 Correct 61 ms 65216 KB Output is correct
51 Correct 62 ms 65144 KB Output is correct
52 Correct 60 ms 65144 KB Output is correct
53 Correct 61 ms 65244 KB Output is correct
54 Correct 60 ms 65116 KB Output is correct
55 Correct 70 ms 65028 KB Output is correct
56 Correct 147 ms 70268 KB Output is correct
57 Correct 186 ms 70308 KB Output is correct
58 Correct 61 ms 65144 KB Output is correct
59 Correct 58 ms 64888 KB Output is correct
60 Correct 67 ms 65016 KB Output is correct
61 Correct 181 ms 70520 KB Output is correct
62 Correct 60 ms 65144 KB Output is correct
63 Correct 270 ms 76016 KB Output is correct
64 Correct 181 ms 70340 KB Output is correct
65 Correct 60 ms 65144 KB Output is correct
66 Correct 212 ms 71032 KB Output is correct
67 Correct 60 ms 65144 KB Output is correct
68 Correct 61 ms 65144 KB Output is correct
69 Correct 147 ms 70092 KB Output is correct
70 Correct 61 ms 65344 KB Output is correct
71 Correct 185 ms 70448 KB Output is correct
72 Correct 224 ms 72184 KB Output is correct
73 Correct 58 ms 64888 KB Output is correct
74 Correct 241 ms 76148 KB Output is correct
75 Correct 257 ms 73340 KB Output is correct
76 Correct 60 ms 65144 KB Output is correct
77 Correct 61 ms 65272 KB Output is correct
78 Correct 141 ms 70212 KB Output is correct
79 Correct 169 ms 73968 KB Output is correct
80 Correct 62 ms 65116 KB Output is correct
81 Correct 65 ms 65280 KB Output is correct
82 Correct 58 ms 64888 KB Output is correct
83 Correct 58 ms 65016 KB Output is correct
84 Correct 60 ms 65064 KB Output is correct
85 Correct 211 ms 72248 KB Output is correct
86 Correct 60 ms 65144 KB Output is correct
87 Correct 179 ms 71120 KB Output is correct
88 Correct 58 ms 64888 KB Output is correct
89 Correct 226 ms 71076 KB Output is correct
90 Correct 223 ms 72076 KB Output is correct
91 Correct 215 ms 73592 KB Output is correct
92 Correct 153 ms 70092 KB Output is correct
93 Correct 61 ms 65144 KB Output is correct
94 Correct 65 ms 64952 KB Output is correct
95 Correct 169 ms 73584 KB Output is correct
96 Correct 296 ms 76856 KB Output is correct
97 Correct 72 ms 65144 KB Output is correct
98 Correct 70 ms 64988 KB Output is correct
99 Correct 224 ms 72536 KB Output is correct
100 Correct 62 ms 65272 KB Output is correct
101 Correct 223 ms 71544 KB Output is correct
102 Correct 239 ms 75660 KB Output is correct
103 Correct 61 ms 65272 KB Output is correct
104 Correct 62 ms 65272 KB Output is correct
105 Correct 61 ms 65144 KB Output is correct
106 Correct 61 ms 65144 KB Output is correct
107 Correct 74 ms 65144 KB Output is correct
108 Correct 974 ms 100936 KB Output is correct
109 Correct 1431 ms 105532 KB Output is correct
110 Correct 1454 ms 114396 KB Output is correct
111 Correct 1651 ms 127088 KB Output is correct
112 Correct 1370 ms 119296 KB Output is correct
113 Correct 834 ms 108512 KB Output is correct
114 Incorrect 894 ms 91356 KB Output isn't correct
115 Halted 0 ms 0 KB -