| # |
Submission time |
Handle |
Problem |
Language |
Result |
Execution time |
Memory |
| 220617 |
2020-04-08T09:12:39 Z |
atoiz |
Mergers (JOI19_mergers) |
C++14 |
|
111 ms |
38520 KB |
#include <iostream>
#include <vector>
#include <algorithm>
using namespace std;
const int MAXN = 500007;
int N, K, rt = 1, ans = 0;
int dsu[MAXN], group[MAXN], last[MAXN], val[MAXN];
vector<int> adj[MAXN], add[MAXN];
int root(int u) { return (dsu[u] != u ? dsu[u] = root(dsu[u]) : u); }
void dfs(int u, int p)
{
dsu[u] = u;
for (int v : add[u]) {
if (dsu[v]) val[root(v)] -= 2;
}
for (int v : adj[u]) if (v != p) {
dfs(v, u);
dsu[v] = u;
val[u] += val[v];
}
if (u != rt && !val[u]) ++val[u], ++ans;
}
int main()
{
ios_base::sync_with_stdio(0); cin.tie(0);
cin >> N >> K;
for (int i = 0; i < N - 1; ++i) {
int u, v;
cin >> u >> v;
adj[u].push_back(v);
adj[v].push_back(u);
}
for (int u = 1; u <= N; ++u) {
cin >> group[u];
if (last[group[u]]) {
int v = last[group[u]];
add[u].push_back(v);
add[v].push_back(u);
++val[u], ++val[v];
}
last[group[u]] = u;
}
if (N == 2) return cout << K - 1 << endl, 0;
for (rt = 1; adj[rt].size() == 1; ++rt);
dfs(rt, 0);
cout << (ans + 1) / 2 << endl;
return 0;
}
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
21 ms |
23808 KB |
Output is correct |
| 2 |
Correct |
19 ms |
23808 KB |
Output is correct |
| 3 |
Correct |
19 ms |
23936 KB |
Output is correct |
| 4 |
Correct |
18 ms |
23808 KB |
Output is correct |
| 5 |
Correct |
18 ms |
23936 KB |
Output is correct |
| 6 |
Correct |
20 ms |
23936 KB |
Output is correct |
| 7 |
Correct |
18 ms |
23936 KB |
Output is correct |
| 8 |
Correct |
19 ms |
23808 KB |
Output is correct |
| 9 |
Correct |
19 ms |
23936 KB |
Output is correct |
| 10 |
Correct |
18 ms |
23808 KB |
Output is correct |
| 11 |
Correct |
18 ms |
23808 KB |
Output is correct |
| 12 |
Correct |
19 ms |
23808 KB |
Output is correct |
| 13 |
Correct |
19 ms |
23808 KB |
Output is correct |
| 14 |
Correct |
18 ms |
23936 KB |
Output is correct |
| 15 |
Correct |
18 ms |
23936 KB |
Output is correct |
| 16 |
Correct |
20 ms |
23808 KB |
Output is correct |
| 17 |
Correct |
19 ms |
23808 KB |
Output is correct |
| 18 |
Correct |
18 ms |
23808 KB |
Output is correct |
| 19 |
Correct |
18 ms |
23808 KB |
Output is correct |
| 20 |
Correct |
18 ms |
23808 KB |
Output is correct |
| 21 |
Correct |
18 ms |
23808 KB |
Output is correct |
| 22 |
Correct |
18 ms |
23808 KB |
Output is correct |
| 23 |
Correct |
18 ms |
23936 KB |
Output is correct |
| 24 |
Correct |
19 ms |
23808 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
21 ms |
23808 KB |
Output is correct |
| 2 |
Correct |
19 ms |
23808 KB |
Output is correct |
| 3 |
Correct |
19 ms |
23936 KB |
Output is correct |
| 4 |
Correct |
18 ms |
23808 KB |
Output is correct |
| 5 |
Correct |
18 ms |
23936 KB |
Output is correct |
| 6 |
Correct |
20 ms |
23936 KB |
Output is correct |
| 7 |
Correct |
18 ms |
23936 KB |
Output is correct |
| 8 |
Correct |
19 ms |
23808 KB |
Output is correct |
| 9 |
Correct |
19 ms |
23936 KB |
Output is correct |
| 10 |
Correct |
18 ms |
23808 KB |
Output is correct |
| 11 |
Correct |
18 ms |
23808 KB |
Output is correct |
| 12 |
Correct |
19 ms |
23808 KB |
Output is correct |
| 13 |
Correct |
19 ms |
23808 KB |
Output is correct |
| 14 |
Correct |
18 ms |
23936 KB |
Output is correct |
| 15 |
Correct |
18 ms |
23936 KB |
Output is correct |
| 16 |
Correct |
20 ms |
23808 KB |
Output is correct |
| 17 |
Correct |
19 ms |
23808 KB |
Output is correct |
| 18 |
Correct |
18 ms |
23808 KB |
Output is correct |
| 19 |
Correct |
18 ms |
23808 KB |
Output is correct |
| 20 |
Correct |
18 ms |
23808 KB |
Output is correct |
| 21 |
Correct |
18 ms |
23808 KB |
Output is correct |
| 22 |
Correct |
18 ms |
23808 KB |
Output is correct |
| 23 |
Correct |
18 ms |
23936 KB |
Output is correct |
| 24 |
Correct |
19 ms |
23808 KB |
Output is correct |
| 25 |
Correct |
19 ms |
23808 KB |
Output is correct |
| 26 |
Correct |
20 ms |
24064 KB |
Output is correct |
| 27 |
Correct |
20 ms |
24064 KB |
Output is correct |
| 28 |
Correct |
21 ms |
24064 KB |
Output is correct |
| 29 |
Correct |
21 ms |
24064 KB |
Output is correct |
| 30 |
Correct |
20 ms |
24064 KB |
Output is correct |
| 31 |
Correct |
19 ms |
23808 KB |
Output is correct |
| 32 |
Correct |
20 ms |
24192 KB |
Output is correct |
| 33 |
Correct |
18 ms |
23808 KB |
Output is correct |
| 34 |
Correct |
20 ms |
24064 KB |
Output is correct |
| 35 |
Correct |
21 ms |
24064 KB |
Output is correct |
| 36 |
Incorrect |
20 ms |
24064 KB |
Output isn't correct |
| 37 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
21 ms |
23808 KB |
Output is correct |
| 2 |
Correct |
19 ms |
23808 KB |
Output is correct |
| 3 |
Correct |
19 ms |
23936 KB |
Output is correct |
| 4 |
Correct |
18 ms |
23808 KB |
Output is correct |
| 5 |
Correct |
18 ms |
23936 KB |
Output is correct |
| 6 |
Correct |
20 ms |
23936 KB |
Output is correct |
| 7 |
Correct |
18 ms |
23936 KB |
Output is correct |
| 8 |
Correct |
19 ms |
23808 KB |
Output is correct |
| 9 |
Correct |
19 ms |
23936 KB |
Output is correct |
| 10 |
Correct |
18 ms |
23808 KB |
Output is correct |
| 11 |
Correct |
18 ms |
23808 KB |
Output is correct |
| 12 |
Correct |
19 ms |
23808 KB |
Output is correct |
| 13 |
Correct |
19 ms |
23808 KB |
Output is correct |
| 14 |
Correct |
18 ms |
23936 KB |
Output is correct |
| 15 |
Correct |
18 ms |
23936 KB |
Output is correct |
| 16 |
Correct |
20 ms |
23808 KB |
Output is correct |
| 17 |
Correct |
19 ms |
23808 KB |
Output is correct |
| 18 |
Correct |
18 ms |
23808 KB |
Output is correct |
| 19 |
Correct |
18 ms |
23808 KB |
Output is correct |
| 20 |
Correct |
18 ms |
23808 KB |
Output is correct |
| 21 |
Correct |
18 ms |
23808 KB |
Output is correct |
| 22 |
Correct |
18 ms |
23808 KB |
Output is correct |
| 23 |
Correct |
18 ms |
23936 KB |
Output is correct |
| 24 |
Correct |
19 ms |
23808 KB |
Output is correct |
| 25 |
Correct |
18 ms |
23808 KB |
Output is correct |
| 26 |
Correct |
93 ms |
33136 KB |
Output is correct |
| 27 |
Correct |
109 ms |
32888 KB |
Output is correct |
| 28 |
Correct |
20 ms |
24064 KB |
Output is correct |
| 29 |
Correct |
19 ms |
23808 KB |
Output is correct |
| 30 |
Correct |
19 ms |
23808 KB |
Output is correct |
| 31 |
Correct |
102 ms |
32764 KB |
Output is correct |
| 32 |
Correct |
20 ms |
24064 KB |
Output is correct |
| 33 |
Correct |
111 ms |
38520 KB |
Output is correct |
| 34 |
Correct |
107 ms |
32888 KB |
Output is correct |
| 35 |
Incorrect |
21 ms |
24064 KB |
Output isn't correct |
| 36 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
84 ms |
31728 KB |
Output is correct |
| 2 |
Correct |
78 ms |
28912 KB |
Output is correct |
| 3 |
Correct |
20 ms |
24064 KB |
Output is correct |
| 4 |
Correct |
22 ms |
24064 KB |
Output is correct |
| 5 |
Correct |
19 ms |
23936 KB |
Output is correct |
| 6 |
Correct |
18 ms |
23808 KB |
Output is correct |
| 7 |
Correct |
20 ms |
24064 KB |
Output is correct |
| 8 |
Correct |
104 ms |
32760 KB |
Output is correct |
| 9 |
Incorrect |
21 ms |
24064 KB |
Output isn't correct |
| 10 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
21 ms |
23808 KB |
Output is correct |
| 2 |
Correct |
19 ms |
23808 KB |
Output is correct |
| 3 |
Correct |
19 ms |
23936 KB |
Output is correct |
| 4 |
Correct |
18 ms |
23808 KB |
Output is correct |
| 5 |
Correct |
18 ms |
23936 KB |
Output is correct |
| 6 |
Correct |
20 ms |
23936 KB |
Output is correct |
| 7 |
Correct |
18 ms |
23936 KB |
Output is correct |
| 8 |
Correct |
19 ms |
23808 KB |
Output is correct |
| 9 |
Correct |
19 ms |
23936 KB |
Output is correct |
| 10 |
Correct |
18 ms |
23808 KB |
Output is correct |
| 11 |
Correct |
18 ms |
23808 KB |
Output is correct |
| 12 |
Correct |
19 ms |
23808 KB |
Output is correct |
| 13 |
Correct |
19 ms |
23808 KB |
Output is correct |
| 14 |
Correct |
18 ms |
23936 KB |
Output is correct |
| 15 |
Correct |
18 ms |
23936 KB |
Output is correct |
| 16 |
Correct |
20 ms |
23808 KB |
Output is correct |
| 17 |
Correct |
19 ms |
23808 KB |
Output is correct |
| 18 |
Correct |
18 ms |
23808 KB |
Output is correct |
| 19 |
Correct |
18 ms |
23808 KB |
Output is correct |
| 20 |
Correct |
18 ms |
23808 KB |
Output is correct |
| 21 |
Correct |
18 ms |
23808 KB |
Output is correct |
| 22 |
Correct |
18 ms |
23808 KB |
Output is correct |
| 23 |
Correct |
18 ms |
23936 KB |
Output is correct |
| 24 |
Correct |
19 ms |
23808 KB |
Output is correct |
| 25 |
Correct |
19 ms |
23808 KB |
Output is correct |
| 26 |
Correct |
20 ms |
24064 KB |
Output is correct |
| 27 |
Correct |
20 ms |
24064 KB |
Output is correct |
| 28 |
Correct |
21 ms |
24064 KB |
Output is correct |
| 29 |
Correct |
21 ms |
24064 KB |
Output is correct |
| 30 |
Correct |
20 ms |
24064 KB |
Output is correct |
| 31 |
Correct |
19 ms |
23808 KB |
Output is correct |
| 32 |
Correct |
20 ms |
24192 KB |
Output is correct |
| 33 |
Correct |
18 ms |
23808 KB |
Output is correct |
| 34 |
Correct |
20 ms |
24064 KB |
Output is correct |
| 35 |
Correct |
21 ms |
24064 KB |
Output is correct |
| 36 |
Incorrect |
20 ms |
24064 KB |
Output isn't correct |
| 37 |
Halted |
0 ms |
0 KB |
- |
