| # |
Submission time |
Handle |
Problem |
Language |
Result |
Execution time |
Memory |
| 1114238 |
2024-11-18T12:09:00 Z |
Dan4Life |
Mergers (JOI19_mergers) |
C++17 |
|
3000 ms |
52976 KB |
#include <bits/stdc++.h>
using namespace std;
#define pb push_back
#define sz(a) (int)a.size()
#define all(a) begin(a),end(a)
using ar2 = array<int,2>;
const int N = (int)5e5+10;
int n, k;
int p[N], sz[N];
int a[N], tot[N], cnt[N], deg[N];
vector<int> v[N], adj[N];
int findSet(int i){return i==p[i]?i:p[i]=findSet(p[i]);}
void unionSet(int i, int j){
int x = findSet(i), y = findSet(j);
if(x==y) return;
if(sz[x]<sz[y])swap(x,y);
p[y] = x, sz[x]+=sz[y];
}
void dfs(int s, int p){
v[s].pb(a[s]);
for(auto u : adj[s]){
if(u==p) continue;
dfs(u,s);
if(sz(v[s]) < sz(v[u])) v[s].swap(v[u]);
for(auto w : v[u]) v[s].pb(w);
v[u].clear();v[u].shrink_to_fit();
}
int ok = 1;
for(auto u : v[s]) cnt[u]++;
for(auto u : v[s]){
ok&=(cnt[u]==tot[u]);
if(!ok) break;
}
for(auto u : v[s]) cnt[u]--;
if(p and !ok) unionSet(s,p);
}
int32_t main(){
ios_base::sync_with_stdio(false); cin.tie(0);
cin >> n >> k;
for(int i = 1; i <= n; i++) p[i]=i,sz[i]=1;
for(int i = 1; i < n; i++){
int a, b; cin >> a >> b;
adj[a].pb(b); adj[b].pb(a);
}
for(int i = 1; i <= n; i++)
cin >> a[i], tot[a[i]]++;
dfs(1,0);
for(int i = 1; i <= n; i++){
int x = findSet(i);
for(int j : adj[i])
deg[x]+=(x!=findSet(j));
}
int cnt = 1;
for(int i = 1; i <= n; i++) cnt+=(deg[i]==1);
cout << cnt/2 << "\n";
}
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
6 ms |
35408 KB |
Output is correct |
| 2 |
Correct |
6 ms |
35408 KB |
Output is correct |
| 3 |
Correct |
6 ms |
35408 KB |
Output is correct |
| 4 |
Correct |
5 ms |
35424 KB |
Output is correct |
| 5 |
Correct |
5 ms |
35408 KB |
Output is correct |
| 6 |
Correct |
6 ms |
35408 KB |
Output is correct |
| 7 |
Correct |
5 ms |
35456 KB |
Output is correct |
| 8 |
Correct |
6 ms |
35408 KB |
Output is correct |
| 9 |
Correct |
5 ms |
35408 KB |
Output is correct |
| 10 |
Correct |
6 ms |
35308 KB |
Output is correct |
| 11 |
Correct |
6 ms |
35408 KB |
Output is correct |
| 12 |
Correct |
6 ms |
35408 KB |
Output is correct |
| 13 |
Correct |
6 ms |
35508 KB |
Output is correct |
| 14 |
Correct |
6 ms |
35408 KB |
Output is correct |
| 15 |
Correct |
6 ms |
35408 KB |
Output is correct |
| 16 |
Correct |
5 ms |
35408 KB |
Output is correct |
| 17 |
Correct |
5 ms |
35408 KB |
Output is correct |
| 18 |
Correct |
5 ms |
35408 KB |
Output is correct |
| 19 |
Correct |
6 ms |
35572 KB |
Output is correct |
| 20 |
Correct |
6 ms |
35408 KB |
Output is correct |
| 21 |
Correct |
5 ms |
35408 KB |
Output is correct |
| 22 |
Correct |
5 ms |
35408 KB |
Output is correct |
| 23 |
Correct |
6 ms |
35280 KB |
Output is correct |
| 24 |
Correct |
6 ms |
35408 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
6 ms |
35408 KB |
Output is correct |
| 2 |
Correct |
6 ms |
35408 KB |
Output is correct |
| 3 |
Correct |
6 ms |
35408 KB |
Output is correct |
| 4 |
Correct |
5 ms |
35424 KB |
Output is correct |
| 5 |
Correct |
5 ms |
35408 KB |
Output is correct |
| 6 |
Correct |
6 ms |
35408 KB |
Output is correct |
| 7 |
Correct |
5 ms |
35456 KB |
Output is correct |
| 8 |
Correct |
6 ms |
35408 KB |
Output is correct |
| 9 |
Correct |
5 ms |
35408 KB |
Output is correct |
| 10 |
Correct |
6 ms |
35308 KB |
Output is correct |
| 11 |
Correct |
6 ms |
35408 KB |
Output is correct |
| 12 |
Correct |
6 ms |
35408 KB |
Output is correct |
| 13 |
Correct |
6 ms |
35508 KB |
Output is correct |
| 14 |
Correct |
6 ms |
35408 KB |
Output is correct |
| 15 |
Correct |
6 ms |
35408 KB |
Output is correct |
| 16 |
Correct |
5 ms |
35408 KB |
Output is correct |
| 17 |
Correct |
5 ms |
35408 KB |
Output is correct |
| 18 |
Correct |
5 ms |
35408 KB |
Output is correct |
| 19 |
Correct |
6 ms |
35572 KB |
Output is correct |
| 20 |
Correct |
6 ms |
35408 KB |
Output is correct |
| 21 |
Correct |
5 ms |
35408 KB |
Output is correct |
| 22 |
Correct |
5 ms |
35408 KB |
Output is correct |
| 23 |
Correct |
6 ms |
35280 KB |
Output is correct |
| 24 |
Correct |
6 ms |
35408 KB |
Output is correct |
| 25 |
Correct |
5 ms |
35408 KB |
Output is correct |
| 26 |
Correct |
7 ms |
35664 KB |
Output is correct |
| 27 |
Correct |
8 ms |
35664 KB |
Output is correct |
| 28 |
Correct |
12 ms |
35664 KB |
Output is correct |
| 29 |
Correct |
7 ms |
35664 KB |
Output is correct |
| 30 |
Correct |
7 ms |
35664 KB |
Output is correct |
| 31 |
Correct |
5 ms |
33360 KB |
Output is correct |
| 32 |
Correct |
10 ms |
35920 KB |
Output is correct |
| 33 |
Correct |
6 ms |
33408 KB |
Output is correct |
| 34 |
Correct |
6 ms |
29520 KB |
Output is correct |
| 35 |
Correct |
7 ms |
35408 KB |
Output is correct |
| 36 |
Correct |
8 ms |
35664 KB |
Output is correct |
| 37 |
Correct |
7 ms |
33616 KB |
Output is correct |
| 38 |
Correct |
7 ms |
35408 KB |
Output is correct |
| 39 |
Correct |
7 ms |
35664 KB |
Output is correct |
| 40 |
Correct |
7 ms |
35664 KB |
Output is correct |
| 41 |
Correct |
7 ms |
35664 KB |
Output is correct |
| 42 |
Correct |
6 ms |
33556 KB |
Output is correct |
| 43 |
Correct |
10 ms |
27896 KB |
Output is correct |
| 44 |
Correct |
5 ms |
27216 KB |
Output is correct |
| 45 |
Correct |
10 ms |
27472 KB |
Output is correct |
| 46 |
Correct |
6 ms |
27472 KB |
Output is correct |
| 47 |
Correct |
5 ms |
27216 KB |
Output is correct |
| 48 |
Correct |
6 ms |
25424 KB |
Output is correct |
| 49 |
Correct |
6 ms |
27472 KB |
Output is correct |
| 50 |
Correct |
9 ms |
35664 KB |
Output is correct |
| 51 |
Correct |
7 ms |
35664 KB |
Output is correct |
| 52 |
Correct |
7 ms |
35664 KB |
Output is correct |
| 53 |
Correct |
7 ms |
35664 KB |
Output is correct |
| 54 |
Correct |
7 ms |
35664 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
6 ms |
35408 KB |
Output is correct |
| 2 |
Correct |
6 ms |
35408 KB |
Output is correct |
| 3 |
Correct |
6 ms |
35408 KB |
Output is correct |
| 4 |
Correct |
5 ms |
35424 KB |
Output is correct |
| 5 |
Correct |
5 ms |
35408 KB |
Output is correct |
| 6 |
Correct |
6 ms |
35408 KB |
Output is correct |
| 7 |
Correct |
5 ms |
35456 KB |
Output is correct |
| 8 |
Correct |
6 ms |
35408 KB |
Output is correct |
| 9 |
Correct |
5 ms |
35408 KB |
Output is correct |
| 10 |
Correct |
6 ms |
35308 KB |
Output is correct |
| 11 |
Correct |
6 ms |
35408 KB |
Output is correct |
| 12 |
Correct |
6 ms |
35408 KB |
Output is correct |
| 13 |
Correct |
6 ms |
35508 KB |
Output is correct |
| 14 |
Correct |
6 ms |
35408 KB |
Output is correct |
| 15 |
Correct |
6 ms |
35408 KB |
Output is correct |
| 16 |
Correct |
5 ms |
35408 KB |
Output is correct |
| 17 |
Correct |
5 ms |
35408 KB |
Output is correct |
| 18 |
Correct |
5 ms |
35408 KB |
Output is correct |
| 19 |
Correct |
6 ms |
35572 KB |
Output is correct |
| 20 |
Correct |
6 ms |
35408 KB |
Output is correct |
| 21 |
Correct |
5 ms |
35408 KB |
Output is correct |
| 22 |
Correct |
5 ms |
35408 KB |
Output is correct |
| 23 |
Correct |
6 ms |
35280 KB |
Output is correct |
| 24 |
Correct |
6 ms |
35408 KB |
Output is correct |
| 25 |
Correct |
6 ms |
35408 KB |
Output is correct |
| 26 |
Correct |
37 ms |
39636 KB |
Output is correct |
| 27 |
Correct |
51 ms |
39584 KB |
Output is correct |
| 28 |
Correct |
9 ms |
35676 KB |
Output is correct |
| 29 |
Correct |
6 ms |
35408 KB |
Output is correct |
| 30 |
Correct |
7 ms |
35408 KB |
Output is correct |
| 31 |
Correct |
59 ms |
39624 KB |
Output is correct |
| 32 |
Correct |
7 ms |
35664 KB |
Output is correct |
| 33 |
Execution timed out |
3100 ms |
52976 KB |
Time limit exceeded |
| 34 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
36 ms |
39772 KB |
Output is correct |
| 2 |
Correct |
40 ms |
39820 KB |
Output is correct |
| 3 |
Correct |
7 ms |
35664 KB |
Output is correct |
| 4 |
Correct |
8 ms |
35624 KB |
Output is correct |
| 5 |
Correct |
6 ms |
35408 KB |
Output is correct |
| 6 |
Correct |
6 ms |
35408 KB |
Output is correct |
| 7 |
Correct |
6 ms |
35664 KB |
Output is correct |
| 8 |
Correct |
77 ms |
39352 KB |
Output is correct |
| 9 |
Correct |
8 ms |
35832 KB |
Output is correct |
| 10 |
Correct |
78 ms |
39544 KB |
Output is correct |
| 11 |
Correct |
6 ms |
35408 KB |
Output is correct |
| 12 |
Correct |
157 ms |
39424 KB |
Output is correct |
| 13 |
Correct |
58 ms |
39328 KB |
Output is correct |
| 14 |
Correct |
54 ms |
39528 KB |
Output is correct |
| 15 |
Correct |
36 ms |
39744 KB |
Output is correct |
| 16 |
Correct |
7 ms |
35664 KB |
Output is correct |
| 17 |
Correct |
6 ms |
35408 KB |
Output is correct |
| 18 |
Correct |
40 ms |
39744 KB |
Output is correct |
| 19 |
Execution timed out |
3078 ms |
46152 KB |
Time limit exceeded |
| 20 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
6 ms |
35408 KB |
Output is correct |
| 2 |
Correct |
6 ms |
35408 KB |
Output is correct |
| 3 |
Correct |
6 ms |
35408 KB |
Output is correct |
| 4 |
Correct |
5 ms |
35424 KB |
Output is correct |
| 5 |
Correct |
5 ms |
35408 KB |
Output is correct |
| 6 |
Correct |
6 ms |
35408 KB |
Output is correct |
| 7 |
Correct |
5 ms |
35456 KB |
Output is correct |
| 8 |
Correct |
6 ms |
35408 KB |
Output is correct |
| 9 |
Correct |
5 ms |
35408 KB |
Output is correct |
| 10 |
Correct |
6 ms |
35308 KB |
Output is correct |
| 11 |
Correct |
6 ms |
35408 KB |
Output is correct |
| 12 |
Correct |
6 ms |
35408 KB |
Output is correct |
| 13 |
Correct |
6 ms |
35508 KB |
Output is correct |
| 14 |
Correct |
6 ms |
35408 KB |
Output is correct |
| 15 |
Correct |
6 ms |
35408 KB |
Output is correct |
| 16 |
Correct |
5 ms |
35408 KB |
Output is correct |
| 17 |
Correct |
5 ms |
35408 KB |
Output is correct |
| 18 |
Correct |
5 ms |
35408 KB |
Output is correct |
| 19 |
Correct |
6 ms |
35572 KB |
Output is correct |
| 20 |
Correct |
6 ms |
35408 KB |
Output is correct |
| 21 |
Correct |
5 ms |
35408 KB |
Output is correct |
| 22 |
Correct |
5 ms |
35408 KB |
Output is correct |
| 23 |
Correct |
6 ms |
35280 KB |
Output is correct |
| 24 |
Correct |
6 ms |
35408 KB |
Output is correct |
| 25 |
Correct |
5 ms |
35408 KB |
Output is correct |
| 26 |
Correct |
7 ms |
35664 KB |
Output is correct |
| 27 |
Correct |
8 ms |
35664 KB |
Output is correct |
| 28 |
Correct |
12 ms |
35664 KB |
Output is correct |
| 29 |
Correct |
7 ms |
35664 KB |
Output is correct |
| 30 |
Correct |
7 ms |
35664 KB |
Output is correct |
| 31 |
Correct |
5 ms |
33360 KB |
Output is correct |
| 32 |
Correct |
10 ms |
35920 KB |
Output is correct |
| 33 |
Correct |
6 ms |
33408 KB |
Output is correct |
| 34 |
Correct |
6 ms |
29520 KB |
Output is correct |
| 35 |
Correct |
7 ms |
35408 KB |
Output is correct |
| 36 |
Correct |
8 ms |
35664 KB |
Output is correct |
| 37 |
Correct |
7 ms |
33616 KB |
Output is correct |
| 38 |
Correct |
7 ms |
35408 KB |
Output is correct |
| 39 |
Correct |
7 ms |
35664 KB |
Output is correct |
| 40 |
Correct |
7 ms |
35664 KB |
Output is correct |
| 41 |
Correct |
7 ms |
35664 KB |
Output is correct |
| 42 |
Correct |
6 ms |
33556 KB |
Output is correct |
| 43 |
Correct |
10 ms |
27896 KB |
Output is correct |
| 44 |
Correct |
5 ms |
27216 KB |
Output is correct |
| 45 |
Correct |
10 ms |
27472 KB |
Output is correct |
| 46 |
Correct |
6 ms |
27472 KB |
Output is correct |
| 47 |
Correct |
5 ms |
27216 KB |
Output is correct |
| 48 |
Correct |
6 ms |
25424 KB |
Output is correct |
| 49 |
Correct |
6 ms |
27472 KB |
Output is correct |
| 50 |
Correct |
9 ms |
35664 KB |
Output is correct |
| 51 |
Correct |
7 ms |
35664 KB |
Output is correct |
| 52 |
Correct |
7 ms |
35664 KB |
Output is correct |
| 53 |
Correct |
7 ms |
35664 KB |
Output is correct |
| 54 |
Correct |
7 ms |
35664 KB |
Output is correct |
| 55 |
Correct |
6 ms |
35408 KB |
Output is correct |
| 56 |
Correct |
37 ms |
39636 KB |
Output is correct |
| 57 |
Correct |
51 ms |
39584 KB |
Output is correct |
| 58 |
Correct |
9 ms |
35676 KB |
Output is correct |
| 59 |
Correct |
6 ms |
35408 KB |
Output is correct |
| 60 |
Correct |
7 ms |
35408 KB |
Output is correct |
| 61 |
Correct |
59 ms |
39624 KB |
Output is correct |
| 62 |
Correct |
7 ms |
35664 KB |
Output is correct |
| 63 |
Execution timed out |
3100 ms |
52976 KB |
Time limit exceeded |
| 64 |
Halted |
0 ms |
0 KB |
- |
