oj.uz

답안 #971894

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
971894 2024-04-29T12:52:24 Z happy_node Jail (JOI22_jail) C++17
72 / 100
 1695 ms 1048576 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], dep[MX];

void dfs(int v, int p) {
	par[v]=p;
	for(auto u:adj[v]) {
		if(u==p) continue;
		dep[u]=dep[v]+1;
		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, dep[i]=0, par[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;

		dep[1]=1;
		dfs(1,0);

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

			vector<int> L,R;

			int u=S[i],v=T[i];

			while(dep[u]>dep[v]) {
				L.push_back(u);
				u=par[u];
			}

			while(dep[v]>dep[u]) {
				R.push_back(v);
				v=par[v];
			}

			while(u!=v) {
				L.push_back(u);
				R.push_back(v);
				u=par[u];
				v=par[v];
			}

			for(auto x:L) path[i].push_back(x);
			path[i].push_back(u);
			reverse(R.begin(),R.end());
			for(auto x:R) path[i].push_back(x);
		}

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

		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

# 결과 실행 시간 메모리 Grader output
1 Correct 8 ms 37212 KB Output is correct
2 Correct 8 ms 37400 KB Output is correct
3 Correct 9 ms 37212 KB Output is correct
4 Correct 15 ms 37524 KB Output is correct
5 Correct 24 ms 38416 KB Output is correct
6 Correct 9 ms 37212 KB Output is correct
7 Correct 9 ms 37464 KB Output is correct
8 Correct 11 ms 37720 KB Output is correct
9 Correct 130 ms 57464 KB Output is correct
10 Correct 535 ms 288364 KB Output is correct
11 Correct 14 ms 37468 KB Output is correct
12 Correct 40 ms 38484 KB Output is correct
13 Correct 205 ms 120320 KB Output is correct
14 Correct 224 ms 147884 KB Output is correct
15 Runtime error 1695 ms 1048576 KB Execution killed with signal 9
16 Halted 0 ms 0 KB -

Subtask #2
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 8 ms 37208 KB Output is correct
2 Correct 8 ms 37208 KB Output is correct
3 Correct 8 ms 37336 KB Output is correct
4 Correct 8 ms 37212 KB Output is correct
5 Correct 9 ms 37208 KB Output is correct
6 Correct 9 ms 37448 KB Output is correct
7 Correct 8 ms 37452 KB Output is correct
8 Correct 9 ms 37212 KB Output is correct
9 Correct 9 ms 37340 KB Output is correct
10 Correct 8 ms 37212 KB Output is correct
11 Correct 9 ms 37212 KB Output is correct
12 Correct 8 ms 37212 KB Output is correct
13 Correct 8 ms 37212 KB Output is correct

Subtask #3
16.0 / 16.0

# 결과 실행 시간 메모리 Grader output
1 Correct 8 ms 37208 KB Output is correct
2 Correct 8 ms 37208 KB Output is correct
3 Correct 8 ms 37336 KB Output is correct
4 Correct 8 ms 37212 KB Output is correct
5 Correct 9 ms 37208 KB Output is correct
6 Correct 9 ms 37448 KB Output is correct
7 Correct 8 ms 37452 KB Output is correct
8 Correct 9 ms 37212 KB Output is correct
9 Correct 9 ms 37340 KB Output is correct
10 Correct 8 ms 37212 KB Output is correct
11 Correct 9 ms 37212 KB Output is correct
12 Correct 8 ms 37212 KB Output is correct
13 Correct 8 ms 37212 KB Output is correct
14 Correct 8 ms 37212 KB Output is correct
15 Correct 8 ms 37212 KB Output is correct
16 Correct 8 ms 37440 KB Output is correct
17 Correct 8 ms 37216 KB Output is correct
18 Correct 8 ms 37464 KB Output is correct
19 Correct 8 ms 37212 KB Output is correct
20 Correct 9 ms 37348 KB Output is correct
21 Correct 8 ms 37216 KB Output is correct
22 Correct 8 ms 37468 KB Output is correct
23 Correct 9 ms 37216 KB Output is correct
24 Correct 9 ms 37216 KB Output is correct
25 Correct 8 ms 37212 KB Output is correct
26 Correct 8 ms 37212 KB Output is correct
27 Correct 10 ms 37212 KB Output is correct
28 Correct 9 ms 37208 KB Output is correct

Subtask #4
28.0 / 28.0

# 결과 실행 시간 메모리 Grader output
1 Correct 8 ms 37208 KB Output is correct
2 Correct 8 ms 37208 KB Output is correct
3 Correct 8 ms 37336 KB Output is correct
4 Correct 8 ms 37212 KB Output is correct
5 Correct 9 ms 37208 KB Output is correct
6 Correct 9 ms 37448 KB Output is correct
7 Correct 8 ms 37452 KB Output is correct
8 Correct 9 ms 37212 KB Output is correct
9 Correct 9 ms 37340 KB Output is correct
10 Correct 8 ms 37212 KB Output is correct
11 Correct 9 ms 37212 KB Output is correct
12 Correct 8 ms 37212 KB Output is correct
13 Correct 8 ms 37212 KB Output is correct
14 Correct 8 ms 37212 KB Output is correct
15 Correct 8 ms 37212 KB Output is correct
16 Correct 8 ms 37440 KB Output is correct
17 Correct 8 ms 37216 KB Output is correct
18 Correct 8 ms 37464 KB Output is correct
19 Correct 8 ms 37212 KB Output is correct
20 Correct 9 ms 37348 KB Output is correct
21 Correct 8 ms 37216 KB Output is correct
22 Correct 8 ms 37468 KB Output is correct
23 Correct 9 ms 37216 KB Output is correct
24 Correct 9 ms 37216 KB Output is correct
25 Correct 8 ms 37212 KB Output is correct
26 Correct 8 ms 37212 KB Output is correct
27 Correct 10 ms 37212 KB Output is correct
28 Correct 9 ms 37208 KB Output is correct
29 Correct 10 ms 37472 KB Output is correct
30 Correct 9 ms 37476 KB Output is correct
31 Correct 9 ms 37472 KB Output is correct
32 Correct 9 ms 37468 KB Output is correct
33 Correct 9 ms 37464 KB Output is correct
34 Correct 10 ms 37584 KB Output is correct
35 Correct 11 ms 37468 KB Output is correct
36 Correct 9 ms 37468 KB Output is correct
37 Correct 9 ms 37468 KB Output is correct

Subtask #5
12.0 / 12.0

# 결과 실행 시간 메모리 Grader output
1 Correct 8 ms 37208 KB Output is correct
2 Correct 8 ms 37208 KB Output is correct
3 Correct 8 ms 37336 KB Output is correct
4 Correct 8 ms 37212 KB Output is correct
5 Correct 9 ms 37208 KB Output is correct
6 Correct 9 ms 37448 KB Output is correct
7 Correct 8 ms 37452 KB Output is correct
8 Correct 9 ms 37212 KB Output is correct
9 Correct 9 ms 37340 KB Output is correct
10 Correct 8 ms 37212 KB Output is correct
11 Correct 9 ms 37212 KB Output is correct
12 Correct 8 ms 37212 KB Output is correct
13 Correct 8 ms 37212 KB Output is correct
14 Correct 8 ms 37212 KB Output is correct
15 Correct 8 ms 37212 KB Output is correct
16 Correct 8 ms 37440 KB Output is correct
17 Correct 8 ms 37216 KB Output is correct
18 Correct 8 ms 37464 KB Output is correct
19 Correct 8 ms 37212 KB Output is correct
20 Correct 9 ms 37348 KB Output is correct
21 Correct 8 ms 37216 KB Output is correct
22 Correct 8 ms 37468 KB Output is correct
23 Correct 9 ms 37216 KB Output is correct
24 Correct 9 ms 37216 KB Output is correct
25 Correct 8 ms 37212 KB Output is correct
26 Correct 8 ms 37212 KB Output is correct
27 Correct 10 ms 37212 KB Output is correct
28 Correct 9 ms 37208 KB Output is correct
29 Correct 10 ms 37472 KB Output is correct
30 Correct 9 ms 37476 KB Output is correct
31 Correct 9 ms 37472 KB Output is correct
32 Correct 9 ms 37468 KB Output is correct
33 Correct 9 ms 37464 KB Output is correct
34 Correct 10 ms 37584 KB Output is correct
35 Correct 11 ms 37468 KB Output is correct
36 Correct 9 ms 37468 KB Output is correct
37 Correct 9 ms 37468 KB Output is correct
38 Correct 140 ms 57404 KB Output is correct
39 Correct 536 ms 288464 KB Output is correct
40 Correct 64 ms 45572 KB Output is correct
41 Correct 38 ms 38996 KB Output is correct
42 Correct 55 ms 46880 KB Output is correct
43 Correct 25 ms 38740 KB Output is correct
44 Correct 15 ms 37720 KB Output is correct
45 Correct 46 ms 44112 KB Output is correct
46 Correct 54 ms 44056 KB Output is correct
47 Correct 118 ms 89644 KB Output is correct
48 Correct 123 ms 91696 KB Output is correct
49 Correct 55 ms 46440 KB Output is correct
50 Correct 48 ms 46420 KB Output is correct
51 Correct 36 ms 44804 KB Output is correct
52 Correct 39 ms 44884 KB Output is correct
53 Correct 15 ms 37976 KB Output is correct
54 Correct 57 ms 43980 KB Output is correct

Subtask #6
11.0 / 11.0

# 결과 실행 시간 메모리 Grader output
1 Correct 7 ms 37208 KB Output is correct
2 Correct 8 ms 37212 KB Output is correct
3 Correct 7 ms 37392 KB Output is correct
4 Correct 7 ms 37212 KB Output is correct
5 Correct 12 ms 37208 KB Output is correct
6 Correct 8 ms 37340 KB Output is correct
7 Correct 8 ms 37208 KB Output is correct
8 Correct 8 ms 37212 KB Output is correct
9 Correct 8 ms 37208 KB Output is correct
10 Correct 10 ms 37212 KB Output is correct
11 Correct 8 ms 37212 KB Output is correct
12 Correct 8 ms 37468 KB Output is correct
13 Correct 23 ms 37980 KB Output is correct
14 Correct 31 ms 38068 KB Output is correct
15 Correct 29 ms 37980 KB Output is correct
16 Correct 54 ms 45908 KB Output is correct
17 Correct 138 ms 58816 KB Output is correct
18 Correct 300 ms 89224 KB Output is correct
19 Correct 60 ms 47900 KB Output is correct
20 Correct 66 ms 48076 KB Output is correct
21 Correct 63 ms 47956 KB Output is correct
22 Correct 129 ms 60308 KB Output is correct
23 Correct 107 ms 59980 KB Output is correct
24 Correct 127 ms 60880 KB Output is correct
25 Correct 117 ms 61256 KB Output is correct
26 Correct 112 ms 61212 KB Output is correct
27 Correct 136 ms 60100 KB Output is correct
28 Correct 113 ms 60104 KB Output is correct
29 Correct 124 ms 60108 KB Output is correct
30 Correct 84 ms 49876 KB Output is correct
31 Correct 94 ms 49872 KB Output is correct
32 Correct 87 ms 52196 KB Output is correct
33 Correct 76 ms 52060 KB Output is correct

Subtask #7
0 / 23.0

# 결과 실행 시간 메모리 Grader output
1 Correct 8 ms 37212 KB Output is correct
2 Correct 8 ms 37400 KB Output is correct
3 Correct 9 ms 37212 KB Output is correct
4 Correct 15 ms 37524 KB Output is correct
5 Correct 24 ms 38416 KB Output is correct
6 Correct 9 ms 37212 KB Output is correct
7 Correct 9 ms 37464 KB Output is correct
8 Correct 11 ms 37720 KB Output is correct
9 Correct 130 ms 57464 KB Output is correct
10 Correct 535 ms 288364 KB Output is correct
11 Correct 14 ms 37468 KB Output is correct
12 Correct 40 ms 38484 KB Output is correct
13 Correct 205 ms 120320 KB Output is correct
14 Correct 224 ms 147884 KB Output is correct
15 Runtime error 1695 ms 1048576 KB Execution killed with signal 9
16 Halted 0 ms 0 KB -