oj.uz

Submission #971499

# Submission time Handle Problem Language Result Execution time Memory
971499 2024-04-28T16:52:45 Z happy_node Jail (JOI22_jail) C++17
49 / 100
 5000 ms 252756 KB 
#include <bits/stdc++.h>
using namespace std;

const int MX=1.2e5+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 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();

		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<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++) {
			for(int j=i+1;j<M;j++) {
				// check start
				if(f(i,S[j])) {
					ADJ[j].push_back(i);
					deg[i]+=1;
				}
				
				if(f(j,S[i])) {
					ADJ[i].push_back(j);
					deg[j]+=1;
				}

				// check end
				if(f(i,T[j])) {
					ADJ[i].push_back(j);
					deg[j]+=1;
				}

				if(f(j,T[i])) {
					ADJ[j].push_back(i);
					deg[i]+=1;
				}
			}
		}

		queue<int> q;

		for(int i=0;i<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==M?"Yes":"No")<<'\n';
	}


}

Subtask #1
0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 9564 KB Output is correct
2 Correct 2 ms 9564 KB Output is correct
3 Correct 2 ms 9564 KB Output is correct
4 Correct 8 ms 9808 KB Output is correct
5 Correct 16 ms 10328 KB Output is correct
6 Correct 3 ms 9564 KB Output is correct
7 Correct 4 ms 9560 KB Output is correct
8 Correct 14 ms 9820 KB Output is correct
9 Correct 3663 ms 28432 KB Output is correct
10 Execution timed out 5037 ms 252616 KB Time limit exceeded
11 Halted 0 ms 0 KB -

Subtask #2
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 9560 KB Output is correct
2 Correct 2 ms 9564 KB Output is correct
3 Correct 3 ms 9564 KB Output is correct
4 Correct 3 ms 9564 KB Output is correct
5 Correct 3 ms 9564 KB Output is correct
6 Correct 3 ms 9644 KB Output is correct
7 Correct 3 ms 9564 KB Output is correct
8 Correct 3 ms 9564 KB Output is correct
9 Correct 3 ms 9564 KB Output is correct
10 Correct 3 ms 9564 KB Output is correct
11 Correct 3 ms 9564 KB Output is correct
12 Correct 3 ms 9564 KB Output is correct
13 Correct 3 ms 9560 KB Output is correct

Subtask #3
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 9560 KB Output is correct
2 Correct 2 ms 9564 KB Output is correct
3 Correct 3 ms 9564 KB Output is correct
4 Correct 3 ms 9564 KB Output is correct
5 Correct 3 ms 9564 KB Output is correct
6 Correct 3 ms 9644 KB Output is correct
7 Correct 3 ms 9564 KB Output is correct
8 Correct 3 ms 9564 KB Output is correct
9 Correct 3 ms 9564 KB Output is correct
10 Correct 3 ms 9564 KB Output is correct
11 Correct 3 ms 9564 KB Output is correct
12 Correct 3 ms 9564 KB Output is correct
13 Correct 3 ms 9560 KB Output is correct
14 Correct 2 ms 9688 KB Output is correct
15 Correct 2 ms 9564 KB Output is correct
16 Correct 4 ms 9652 KB Output is correct
17 Correct 3 ms 9564 KB Output is correct
18 Correct 3 ms 9728 KB Output is correct
19 Correct 2 ms 9564 KB Output is correct
20 Correct 3 ms 9564 KB Output is correct
21 Correct 3 ms 9564 KB Output is correct
22 Correct 3 ms 9816 KB Output is correct
23 Correct 2 ms 9684 KB Output is correct
24 Correct 4 ms 9564 KB Output is correct
25 Correct 4 ms 9564 KB Output is correct
26 Correct 4 ms 9564 KB Output is correct
27 Correct 4 ms 9564 KB Output is correct
28 Correct 2 ms 9564 KB Output is correct

Subtask #4
28.0 / 28.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 9560 KB Output is correct
2 Correct 2 ms 9564 KB Output is correct
3 Correct 3 ms 9564 KB Output is correct
4 Correct 3 ms 9564 KB Output is correct
5 Correct 3 ms 9564 KB Output is correct
6 Correct 3 ms 9644 KB Output is correct
7 Correct 3 ms 9564 KB Output is correct
8 Correct 3 ms 9564 KB Output is correct
9 Correct 3 ms 9564 KB Output is correct
10 Correct 3 ms 9564 KB Output is correct
11 Correct 3 ms 9564 KB Output is correct
12 Correct 3 ms 9564 KB Output is correct
13 Correct 3 ms 9560 KB Output is correct
14 Correct 2 ms 9688 KB Output is correct
15 Correct 2 ms 9564 KB Output is correct
16 Correct 4 ms 9652 KB Output is correct
17 Correct 3 ms 9564 KB Output is correct
18 Correct 3 ms 9728 KB Output is correct
19 Correct 2 ms 9564 KB Output is correct
20 Correct 3 ms 9564 KB Output is correct
21 Correct 3 ms 9564 KB Output is correct
22 Correct 3 ms 9816 KB Output is correct
23 Correct 2 ms 9684 KB Output is correct
24 Correct 4 ms 9564 KB Output is correct
25 Correct 4 ms 9564 KB Output is correct
26 Correct 4 ms 9564 KB Output is correct
27 Correct 4 ms 9564 KB Output is correct
28 Correct 2 ms 9564 KB Output is correct
29 Correct 14 ms 9816 KB Output is correct
30 Correct 6 ms 9560 KB Output is correct
31 Correct 9 ms 9820 KB Output is correct
32 Correct 7 ms 9564 KB Output is correct
33 Correct 4 ms 9648 KB Output is correct
34 Correct 8 ms 9564 KB Output is correct
35 Correct 16 ms 9852 KB Output is correct
36 Correct 5 ms 9564 KB Output is correct
37 Correct 7 ms 9816 KB Output is correct

Subtask #5
0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 9560 KB Output is correct
2 Correct 2 ms 9564 KB Output is correct
3 Correct 3 ms 9564 KB Output is correct
4 Correct 3 ms 9564 KB Output is correct
5 Correct 3 ms 9564 KB Output is correct
6 Correct 3 ms 9644 KB Output is correct
7 Correct 3 ms 9564 KB Output is correct
8 Correct 3 ms 9564 KB Output is correct
9 Correct 3 ms 9564 KB Output is correct
10 Correct 3 ms 9564 KB Output is correct
11 Correct 3 ms 9564 KB Output is correct
12 Correct 3 ms 9564 KB Output is correct
13 Correct 3 ms 9560 KB Output is correct
14 Correct 2 ms 9688 KB Output is correct
15 Correct 2 ms 9564 KB Output is correct
16 Correct 4 ms 9652 KB Output is correct
17 Correct 3 ms 9564 KB Output is correct
18 Correct 3 ms 9728 KB Output is correct
19 Correct 2 ms 9564 KB Output is correct
20 Correct 3 ms 9564 KB Output is correct
21 Correct 3 ms 9564 KB Output is correct
22 Correct 3 ms 9816 KB Output is correct
23 Correct 2 ms 9684 KB Output is correct
24 Correct 4 ms 9564 KB Output is correct
25 Correct 4 ms 9564 KB Output is correct
26 Correct 4 ms 9564 KB Output is correct
27 Correct 4 ms 9564 KB Output is correct
28 Correct 2 ms 9564 KB Output is correct
29 Correct 14 ms 9816 KB Output is correct
30 Correct 6 ms 9560 KB Output is correct
31 Correct 9 ms 9820 KB Output is correct
32 Correct 7 ms 9564 KB Output is correct
33 Correct 4 ms 9648 KB Output is correct
34 Correct 8 ms 9564 KB Output is correct
35 Correct 16 ms 9852 KB Output is correct
36 Correct 5 ms 9564 KB Output is correct
37 Correct 7 ms 9816 KB Output is correct
38 Correct 3506 ms 28232 KB Output is correct
39 Execution timed out 5053 ms 252756 KB Time limit exceeded
40 Halted 0 ms 0 KB -

Subtask #6
0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 9564 KB Output is correct
2 Correct 3 ms 9680 KB Output is correct
3 Correct 2 ms 9564 KB Output is correct
4 Correct 2 ms 9564 KB Output is correct
5 Correct 8 ms 9820 KB Output is correct
6 Correct 2 ms 9564 KB Output is correct
7 Correct 3 ms 9560 KB Output is correct
8 Correct 3 ms 9564 KB Output is correct
9 Correct 3 ms 9560 KB Output is correct
10 Correct 2 ms 9564 KB Output is correct
11 Correct 2 ms 9564 KB Output is correct
12 Correct 6 ms 9564 KB Output is correct
13 Correct 62 ms 10276 KB Output is correct
14 Correct 56 ms 10684 KB Output is correct
15 Correct 59 ms 10192 KB Output is correct
16 Execution timed out 5028 ms 15604 KB Time limit exceeded
17 Halted 0 ms 0 KB -

Subtask #7
0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 9564 KB Output is correct
2 Correct 2 ms 9564 KB Output is correct
3 Correct 2 ms 9564 KB Output is correct
4 Correct 8 ms 9808 KB Output is correct
5 Correct 16 ms 10328 KB Output is correct
6 Correct 3 ms 9564 KB Output is correct
7 Correct 4 ms 9560 KB Output is correct
8 Correct 14 ms 9820 KB Output is correct
9 Correct 3663 ms 28432 KB Output is correct
10 Execution timed out 5037 ms 252616 KB Time limit exceeded
11 Halted 0 ms 0 KB -