답안 #630820

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
630820	2022-08-17T07:11:45 Z	codr0	Mergers (JOI19_mergers)	C++14	24 / 100	94 ms	56932 KB

mergers

#include <bits/stdc++.h>
#define ll long long
#define pll pair<ll,ll>
#define pii pair<int,int>
 
#define FOR(i,a,b) for(int i=a;i<=b;i++)
#define FORR(i,a,b) for(int i=a;i>=b;i--)
#define F first
#define S second
#define err(x) cerr<<#x<<" : "<<x<<'\n';
#define dmid int mid=(r+l)/2
#define lc 2*id
#define rc 2*id+1
#define pb push_back
#define all(x) x.begin(),x.end()
#define SZ(x) (int)x.size()
#define maxm(a,b) a=max(a,b)
#define minm(a,b) a=min(a,b)

using namespace std;
const int N=1e5+4;
const int K=50+4;
vector<int> adj[N];
int cnt[K];
int t[N][K],dp[N];
int n,k;

	void dfs(int v,int p){
		for(int u:adj[v]) if(u!=p){
			dfs(u,v);
			dp[v]+=dp[u];
			FOR(j,1,k) t[v][j]+=t[u][j];
		}
		if(dp[v]==0&&v!=p){
			dp[v]=1;
			FOR(j,1,k) if(t[v][j]!=cnt[j]&&t[v][j]!=0) dp[v]=0;
		}
	}

	int main(){
	iostream::sync_with_stdio(0); cin.tie(0);

	cin>>n>>k;
	FOR(_,1,n-1){
		int u,v; cin>>u>>v;
		adj[u].pb(v);
		adj[v].pb(u);
	}
	if(n<=2){
		int w0,w1; cin>>w0;
		if(n==1){
			cout<<"0\n";
			return 0;
		}
		if(n==2){
			cin>>w1;
			cout<<(w0!=w1)<<'\n';
			return 0;
		}
		assert(1==2);
	}
	FOR(i,1,n){
		int w; cin>>w;
		t[i][w]++;
		cnt[w]++;
	}
	int root=1;
	FOR(i,1,n) if(SZ(adj[i])>1) root=i;
	dfs(root,root);
	FOR(i,1,n) if(i!=root){
		bool ok=1;
		FOR(j,1,k) if(t[i][j]!=cnt[j]&&t[i][j]!=0) ok=0;
		if(ok==0) continue;
		if(dp[i]==dp[root]) dp[root]++;
	}
	cout<<(dp[root]/2+(dp[root]&1))<<'\n';

	return 0;
	}

Subtask #1
10.0 / 10.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	2644 KB	Output is correct
2	Correct	2 ms	2644 KB	Output is correct
3	Correct	1 ms	2644 KB	Output is correct
4	Correct	1 ms	2644 KB	Output is correct
5	Correct	1 ms	2644 KB	Output is correct
6	Correct	1 ms	2644 KB	Output is correct
7	Correct	1 ms	2644 KB	Output is correct
8	Correct	1 ms	2644 KB	Output is correct
9	Correct	2 ms	2644 KB	Output is correct
10	Correct	2 ms	2644 KB	Output is correct
11	Correct	1 ms	2644 KB	Output is correct
12	Correct	2 ms	2664 KB	Output is correct
13	Correct	1 ms	2644 KB	Output is correct
14	Correct	1 ms	2644 KB	Output is correct
15	Correct	2 ms	2644 KB	Output is correct
16	Correct	2 ms	2644 KB	Output is correct
17	Correct	1 ms	2644 KB	Output is correct
18	Correct	2 ms	2644 KB	Output is correct
19	Correct	1 ms	2644 KB	Output is correct
20	Correct	2 ms	2644 KB	Output is correct
21	Correct	1 ms	2644 KB	Output is correct
22	Correct	1 ms	2644 KB	Output is correct
23	Correct	1 ms	2644 KB	Output is correct
24	Correct	2 ms	2644 KB	Output is correct

Subtask #2
0 / 24.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	2644 KB	Output is correct
2	Correct	2 ms	2644 KB	Output is correct
3	Correct	1 ms	2644 KB	Output is correct
4	Correct	1 ms	2644 KB	Output is correct
5	Correct	1 ms	2644 KB	Output is correct
6	Correct	1 ms	2644 KB	Output is correct
7	Correct	1 ms	2644 KB	Output is correct
8	Correct	1 ms	2644 KB	Output is correct
9	Correct	2 ms	2644 KB	Output is correct
10	Correct	2 ms	2644 KB	Output is correct
11	Correct	1 ms	2644 KB	Output is correct
12	Correct	2 ms	2664 KB	Output is correct
13	Correct	1 ms	2644 KB	Output is correct
14	Correct	1 ms	2644 KB	Output is correct
15	Correct	2 ms	2644 KB	Output is correct
16	Correct	2 ms	2644 KB	Output is correct
17	Correct	1 ms	2644 KB	Output is correct
18	Correct	2 ms	2644 KB	Output is correct
19	Correct	1 ms	2644 KB	Output is correct
20	Correct	2 ms	2644 KB	Output is correct
21	Correct	1 ms	2644 KB	Output is correct
22	Correct	1 ms	2644 KB	Output is correct
23	Correct	1 ms	2644 KB	Output is correct
24	Correct	2 ms	2644 KB	Output is correct
25	Correct	2 ms	2644 KB	Output is correct
26	Runtime error	6 ms	6720 KB	Execution killed with signal 11
27	Halted	0 ms	0 KB	-

Subtask #3
14.0 / 14.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	2644 KB	Output is correct
2	Correct	2 ms	2644 KB	Output is correct
3	Correct	1 ms	2644 KB	Output is correct
4	Correct	1 ms	2644 KB	Output is correct
5	Correct	1 ms	2644 KB	Output is correct
6	Correct	1 ms	2644 KB	Output is correct
7	Correct	1 ms	2644 KB	Output is correct
8	Correct	1 ms	2644 KB	Output is correct
9	Correct	2 ms	2644 KB	Output is correct
10	Correct	2 ms	2644 KB	Output is correct
11	Correct	1 ms	2644 KB	Output is correct
12	Correct	2 ms	2664 KB	Output is correct
13	Correct	1 ms	2644 KB	Output is correct
14	Correct	1 ms	2644 KB	Output is correct
15	Correct	2 ms	2644 KB	Output is correct
16	Correct	2 ms	2644 KB	Output is correct
17	Correct	1 ms	2644 KB	Output is correct
18	Correct	2 ms	2644 KB	Output is correct
19	Correct	1 ms	2644 KB	Output is correct
20	Correct	2 ms	2644 KB	Output is correct
21	Correct	1 ms	2644 KB	Output is correct
22	Correct	1 ms	2644 KB	Output is correct
23	Correct	1 ms	2644 KB	Output is correct
24	Correct	2 ms	2644 KB	Output is correct
25	Correct	2 ms	2644 KB	Output is correct
26	Correct	64 ms	29060 KB	Output is correct
27	Correct	84 ms	28848 KB	Output is correct
28	Correct	3 ms	3400 KB	Output is correct
29	Correct	2 ms	2644 KB	Output is correct
30	Correct	2 ms	2676 KB	Output is correct
31	Correct	82 ms	28808 KB	Output is correct
32	Correct	3 ms	3388 KB	Output is correct
33	Correct	86 ms	34420 KB	Output is correct
34	Correct	93 ms	28748 KB	Output is correct
35	Correct	3 ms	3412 KB	Output is correct
36	Correct	94 ms	29704 KB	Output is correct
37	Correct	3 ms	3404 KB	Output is correct
38	Correct	4 ms	3456 KB	Output is correct
39	Correct	72 ms	29004 KB	Output is correct
40	Correct	3 ms	3668 KB	Output is correct
41	Correct	65 ms	28772 KB	Output is correct
42	Correct	90 ms	32340 KB	Output is correct
43	Correct	3 ms	2676 KB	Output is correct
44	Correct	88 ms	33484 KB	Output is correct
45	Correct	86 ms	33356 KB	Output is correct
46	Correct	3 ms	3396 KB	Output is correct
47	Correct	3 ms	3412 KB	Output is correct

Subtask #4
0 / 22.0

#	결과	실행 시간	메모리	Grader output
1	Correct	63 ms	29048 KB	Output is correct
2	Runtime error	60 ms	56932 KB	Execution killed with signal 11
3	Halted	0 ms	0 KB	-

Subtask #5
0 / 30.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	2644 KB	Output is correct
2	Correct	2 ms	2644 KB	Output is correct
3	Correct	1 ms	2644 KB	Output is correct
4	Correct	1 ms	2644 KB	Output is correct
5	Correct	1 ms	2644 KB	Output is correct
6	Correct	1 ms	2644 KB	Output is correct
7	Correct	1 ms	2644 KB	Output is correct
8	Correct	1 ms	2644 KB	Output is correct
9	Correct	2 ms	2644 KB	Output is correct
10	Correct	2 ms	2644 KB	Output is correct
11	Correct	1 ms	2644 KB	Output is correct
12	Correct	2 ms	2664 KB	Output is correct
13	Correct	1 ms	2644 KB	Output is correct
14	Correct	1 ms	2644 KB	Output is correct
15	Correct	2 ms	2644 KB	Output is correct
16	Correct	2 ms	2644 KB	Output is correct
17	Correct	1 ms	2644 KB	Output is correct
18	Correct	2 ms	2644 KB	Output is correct
19	Correct	1 ms	2644 KB	Output is correct
20	Correct	2 ms	2644 KB	Output is correct
21	Correct	1 ms	2644 KB	Output is correct
22	Correct	1 ms	2644 KB	Output is correct
23	Correct	1 ms	2644 KB	Output is correct
24	Correct	2 ms	2644 KB	Output is correct
25	Correct	2 ms	2644 KB	Output is correct
26	Runtime error	6 ms	6720 KB	Execution killed with signal 11
27	Halted	0 ms	0 KB	-

답안 #630820

Compilation message

Subtask #1 10.0 / 10.0

Subtask #2 0 / 24.0

Subtask #3 14.0 / 14.0

Subtask #4 0 / 22.0

Subtask #5 0 / 30.0

Subtask #1
10.0 / 10.0

Subtask #2
0 / 24.0

Subtask #3
14.0 / 14.0

Subtask #4
0 / 22.0

Subtask #5
0 / 30.0