oj.uz

Submission #971884

# Submission time Handle Problem Language Result Execution time Memory
971884 2024-04-29T12:43:56 Z happy_node Jail (JOI22_jail) C++17
61 / 100
 5000 ms 282468 KB 
#include <bits/stdc++.h>
using namespace std;

const int MX=4e5+5;
int Q,N,M;
int S[MX], T[MX];

vector<int> path[MX]; // store the path between Si and Ti

vector<int> adj[MX];

int par[MX];

void dfs(int v, int p) {
	par[v]=p;
	for(auto u:adj[v]) {
		if(u==p) continue;
		dfs(u,v);
	}
}

vector<int> ADJ[MX];
int deg[MX];

bool f(int i, int x) {
	for(auto y:path[i]) 
		if(y==x) return true;
	return false;
}

int cntT[MX], cntS[MX];

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

	cin>>Q;

	while(Q--) {
		cin>>N;
		for(int i=1;i<=N;i++) adj[i].clear(), cntT[i]=0, cntS[i]=0;

		for(int i=0;i<N-1;i++) {
			int u,v;
			cin>>u>>v;
			adj[u].push_back(v);
			adj[v].push_back(u);
		}

		cin>>M;
		for(int i=0;i<2*N+M;i++) path[i].clear(), ADJ[i].clear(), deg[i]=0;

		for(int i=0;i<M;i++) {
			cin>>S[i]>>T[i];
			dfs(S[i],S[i]);

			int p=T[i];
			while(p!=S[i]) {
				path[i].push_back(p);
				p=par[p];
			}
			path[i].push_back(S[i]);
		}

		for(int i=0;i<M;i++) {
			cntS[S[i]]+=1;
			cntT[T[i]]+=1;
		}

		set<pair<int,int>> st;

		for(int i=0;i<M;i++) {
			cntS[S[i]]-=1;
			cntT[T[i]]-=1;

			for(auto x:path[i]) {
				if(cntS[x]) {
					ADJ[M-1+x].push_back(i);
					deg[i]+=1;
				}
				if(cntT[x]) {
					ADJ[i].push_back(M-1+x+N);
					deg[M-1+x+N]+=1;
				}
			}

			ADJ[i].push_back(M-1+S[i]);
			deg[M-1+S[i]]+=1;

			ADJ[M-1+T[i]+N].push_back(i);
			deg[i]+=1;

			cntS[S[i]]+=1;
			cntT[T[i]]+=1;
		}

		queue<int> q;

		for(int i=0;i<2*N+M;i++) {
			if(!deg[i]) {
				q.push(i);
			}
		}

		int ans=0;
		while(!q.empty()) {
			auto v=q.front(); q.pop();
			ans+=1;
			for(auto u:ADJ[v]) {
				deg[u]--;
				if(!deg[u]) q.push(u);
			}
		}

		cout<<(ans==2*N+M?"Yes":"No")<<'\n';
	}


}

Subtask #1
0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 20 ms 37468 KB Output is correct
2 Correct 8 ms 37212 KB Output is correct
3 Correct 8 ms 37316 KB Output is correct
4 Correct 15 ms 37724 KB Output is correct
5 Correct 24 ms 38076 KB Output is correct
6 Correct 8 ms 37212 KB Output is correct
7 Correct 9 ms 37344 KB Output is correct
8 Correct 13 ms 37464 KB Output is correct
9 Correct 450 ms 57440 KB Output is correct
10 Correct 971 ms 282436 KB Output is correct
11 Correct 12 ms 37468 KB Output is correct
12 Correct 62 ms 38496 KB Output is correct
13 Execution timed out 5093 ms 48624 KB Time limit exceeded
14 Halted 0 ms 0 KB -

Subtask #2
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 9 ms 37212 KB Output is correct
2 Correct 7 ms 37208 KB Output is correct
3 Correct 9 ms 37208 KB Output is correct
4 Correct 9 ms 37460 KB Output is correct
5 Correct 10 ms 37468 KB Output is correct
6 Correct 8 ms 37212 KB Output is correct
7 Correct 9 ms 37212 KB Output is correct
8 Correct 9 ms 37212 KB Output is correct
9 Correct 9 ms 37212 KB Output is correct
10 Correct 9 ms 37352 KB Output is correct
11 Correct 8 ms 37464 KB Output is correct
12 Correct 8 ms 37208 KB Output is correct
13 Correct 9 ms 37212 KB Output is correct

Subtask #3
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 9 ms 37212 KB Output is correct
2 Correct 7 ms 37208 KB Output is correct
3 Correct 9 ms 37208 KB Output is correct
4 Correct 9 ms 37460 KB Output is correct
5 Correct 10 ms 37468 KB Output is correct
6 Correct 8 ms 37212 KB Output is correct
7 Correct 9 ms 37212 KB Output is correct
8 Correct 9 ms 37212 KB Output is correct
9 Correct 9 ms 37212 KB Output is correct
10 Correct 9 ms 37352 KB Output is correct
11 Correct 8 ms 37464 KB Output is correct
12 Correct 8 ms 37208 KB Output is correct
13 Correct 9 ms 37212 KB Output is correct
14 Correct 9 ms 37208 KB Output is correct
15 Correct 8 ms 37212 KB Output is correct
16 Correct 10 ms 37324 KB Output is correct
17 Correct 9 ms 37208 KB Output is correct
18 Correct 9 ms 37464 KB Output is correct
19 Correct 9 ms 37408 KB Output is correct
20 Correct 10 ms 37212 KB Output is correct
21 Correct 9 ms 37212 KB Output is correct
22 Correct 8 ms 37324 KB Output is correct
23 Correct 8 ms 37212 KB Output is correct
24 Correct 9 ms 37208 KB Output is correct
25 Correct 9 ms 37212 KB Output is correct
26 Correct 9 ms 37344 KB Output is correct
27 Correct 9 ms 37464 KB Output is correct
28 Correct 8 ms 37388 KB Output is correct

Subtask #4
28.0 / 28.0

# Verdict Execution time Memory Grader output
1 Correct 9 ms 37212 KB Output is correct
2 Correct 7 ms 37208 KB Output is correct
3 Correct 9 ms 37208 KB Output is correct
4 Correct 9 ms 37460 KB Output is correct
5 Correct 10 ms 37468 KB Output is correct
6 Correct 8 ms 37212 KB Output is correct
7 Correct 9 ms 37212 KB Output is correct
8 Correct 9 ms 37212 KB Output is correct
9 Correct 9 ms 37212 KB Output is correct
10 Correct 9 ms 37352 KB Output is correct
11 Correct 8 ms 37464 KB Output is correct
12 Correct 8 ms 37208 KB Output is correct
13 Correct 9 ms 37212 KB Output is correct
14 Correct 9 ms 37208 KB Output is correct
15 Correct 8 ms 37212 KB Output is correct
16 Correct 10 ms 37324 KB Output is correct
17 Correct 9 ms 37208 KB Output is correct
18 Correct 9 ms 37464 KB Output is correct
19 Correct 9 ms 37408 KB Output is correct
20 Correct 10 ms 37212 KB Output is correct
21 Correct 9 ms 37212 KB Output is correct
22 Correct 8 ms 37324 KB Output is correct
23 Correct 8 ms 37212 KB Output is correct
24 Correct 9 ms 37208 KB Output is correct
25 Correct 9 ms 37212 KB Output is correct
26 Correct 9 ms 37344 KB Output is correct
27 Correct 9 ms 37464 KB Output is correct
28 Correct 8 ms 37388 KB Output is correct
29 Correct 12 ms 37464 KB Output is correct
30 Correct 12 ms 37468 KB Output is correct
31 Correct 11 ms 37464 KB Output is correct
32 Correct 11 ms 37468 KB Output is correct
33 Correct 9 ms 37212 KB Output is correct
34 Correct 11 ms 37464 KB Output is correct
35 Correct 13 ms 37560 KB Output is correct
36 Correct 10 ms 37472 KB Output is correct
37 Correct 10 ms 37296 KB Output is correct

Subtask #5
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 9 ms 37212 KB Output is correct
2 Correct 7 ms 37208 KB Output is correct
3 Correct 9 ms 37208 KB Output is correct
4 Correct 9 ms 37460 KB Output is correct
5 Correct 10 ms 37468 KB Output is correct
6 Correct 8 ms 37212 KB Output is correct
7 Correct 9 ms 37212 KB Output is correct
8 Correct 9 ms 37212 KB Output is correct
9 Correct 9 ms 37212 KB Output is correct
10 Correct 9 ms 37352 KB Output is correct
11 Correct 8 ms 37464 KB Output is correct
12 Correct 8 ms 37208 KB Output is correct
13 Correct 9 ms 37212 KB Output is correct
14 Correct 9 ms 37208 KB Output is correct
15 Correct 8 ms 37212 KB Output is correct
16 Correct 10 ms 37324 KB Output is correct
17 Correct 9 ms 37208 KB Output is correct
18 Correct 9 ms 37464 KB Output is correct
19 Correct 9 ms 37408 KB Output is correct
20 Correct 10 ms 37212 KB Output is correct
21 Correct 9 ms 37212 KB Output is correct
22 Correct 8 ms 37324 KB Output is correct
23 Correct 8 ms 37212 KB Output is correct
24 Correct 9 ms 37208 KB Output is correct
25 Correct 9 ms 37212 KB Output is correct
26 Correct 9 ms 37344 KB Output is correct
27 Correct 9 ms 37464 KB Output is correct
28 Correct 8 ms 37388 KB Output is correct
29 Correct 12 ms 37464 KB Output is correct
30 Correct 12 ms 37468 KB Output is correct
31 Correct 11 ms 37464 KB Output is correct
32 Correct 11 ms 37468 KB Output is correct
33 Correct 9 ms 37212 KB Output is correct
34 Correct 11 ms 37464 KB Output is correct
35 Correct 13 ms 37560 KB Output is correct
36 Correct 10 ms 37472 KB Output is correct
37 Correct 10 ms 37296 KB Output is correct
38 Correct 455 ms 57280 KB Output is correct
39 Correct 849 ms 282468 KB Output is correct
40 Correct 802 ms 45880 KB Output is correct
41 Correct 764 ms 39164 KB Output is correct
42 Correct 307 ms 46928 KB Output is correct
43 Correct 89 ms 38860 KB Output is correct
44 Correct 62 ms 37724 KB Output is correct
45 Correct 1592 ms 44312 KB Output is correct
46 Correct 1675 ms 44256 KB Output is correct
47 Correct 692 ms 85768 KB Output is correct
48 Correct 708 ms 87568 KB Output is correct
49 Correct 1081 ms 46504 KB Output is correct
50 Correct 1204 ms 46472 KB Output is correct
51 Correct 391 ms 44012 KB Output is correct
52 Correct 401 ms 44024 KB Output is correct
53 Correct 63 ms 37972 KB Output is correct
54 Correct 1401 ms 43788 KB Output is correct

Subtask #6
0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 37208 KB Output is correct
2 Correct 7 ms 37212 KB Output is correct
3 Correct 7 ms 37212 KB Output is correct
4 Correct 9 ms 37208 KB Output is correct
5 Correct 14 ms 37468 KB Output is correct
6 Correct 8 ms 37212 KB Output is correct
7 Correct 8 ms 37212 KB Output is correct
8 Correct 8 ms 37212 KB Output is correct
9 Correct 8 ms 37396 KB Output is correct
10 Correct 8 ms 37212 KB Output is correct
11 Correct 8 ms 37388 KB Output is correct
12 Correct 10 ms 37400 KB Output is correct
13 Correct 39 ms 37972 KB Output is correct
14 Correct 50 ms 38224 KB Output is correct
15 Correct 45 ms 37972 KB Output is correct
16 Execution timed out 5047 ms 43604 KB Time limit exceeded
17 Halted 0 ms 0 KB -

Subtask #7
0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 20 ms 37468 KB Output is correct
2 Correct 8 ms 37212 KB Output is correct
3 Correct 8 ms 37316 KB Output is correct
4 Correct 15 ms 37724 KB Output is correct
5 Correct 24 ms 38076 KB Output is correct
6 Correct 8 ms 37212 KB Output is correct
7 Correct 9 ms 37344 KB Output is correct
8 Correct 13 ms 37464 KB Output is correct
9 Correct 450 ms 57440 KB Output is correct
10 Correct 971 ms 282436 KB Output is correct
11 Correct 12 ms 37468 KB Output is correct
12 Correct 62 ms 38496 KB Output is correct
13 Execution timed out 5093 ms 48624 KB Time limit exceeded
14 Halted 0 ms 0 KB -