oj.uz

답안 #551831

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
551831 2022-04-21T16:46:59 Z kshitij_sodani Jail (JOI22_jail) C++14
72 / 100
 5000 ms 1048576 KB 
#include <bits/stdc++.h>
using namespace std;
typedef long long llo;
#define a first
#define b second
#define pb push_back
#define endl '\n'
const llo mod=1e9+7;

int q;
int ee;
vector<int> adj[200001];
int cc[200001];
int dd[200001];
int vis[200001];
vector<int> ss;
vector<int> tt;
vector<int> pre[200001];
map<int,int> ind[200001];
int ind2[200001];
int ind3[200001];
vector<int> adj2[200001];
int vis2[200001];
int vis3[200001];
void dfs(int no,int par2=-1){
	ss.pb(no);
	if(ee==no){
		tt=ss;
	}
	for(auto j:adj[no]){
		if(j!=par2){
			dfs(j,no);
		}
	}
	ss.pop_back();
}
int stt=1;
void dfs2(int no){
	vis2[no]=1;
	vis3[no]=1;

	for(auto j:adj2[no]){
		if(vis3[j]==1){
			stt=0;
		}
		if(vis2[j]==0){
			dfs2(j);
		}
	}
	vis3[no]=0;
}
int par[120001][20];
int up[120001];
int lev[120001];
void dfs3(int no,int par2=-1,int xx=-1,int levv=0){
	par[no][0]=par2;
	up[no]=xx;
	lev[no]=levv;
	if(ind2[no]>=0 or ind3[no]>=0){
		xx=no;
	}
	for(auto j:adj[no]){
		if(j!=par2){
			dfs3(j,no,xx,levv+1);
		}
	}
}
int lca(int aa,int bb){
	if(lev[bb]<lev[aa]){
		swap(aa,bb);
	}
	//cout<<lev[bb]<<",,"<<lev[aa]<<endl;
	int dif=lev[bb]-lev[aa];
	//cout<<dif<<",,"<<endl;
	for(int j=19;j>=0;j--){
		if((1<<j)&dif){
			bb=par[bb][j];
		}
	}
/*	cout<<bb<<",,"<<par[bb][0]<<endl;
	cout<<dif<<",,"<<endl;
	cout<<aa<<",,"<<bb<<endl;*/
	if(aa==bb){
		return aa;
	}
	for(int j=19;j>=0;j--){
		if(par[aa][j]!=par[bb][j]){
			aa=par[aa][j];
			bb=par[bb][j];
		}
	}
	return par[aa][0];
}
int main(){
	ios_base::sync_with_stdio(false);
	cin.tie(NULL);
	cin>>q;
	while(q--){
		int n;
		cin>>n;
		for(int i=0;i<n;i++){
			adj[i].clear();
			adj2[i].clear();
		}
		for(int i=0;i<n-1;i++){
			int aa,bb;
			cin>>aa>>bb;
			aa--;
			bb--;
			adj[aa].pb(bb);
			adj[bb].pb(aa);
		}
		int m;
		cin>>m;
		stt=1;
		for(int i=0;i<n;i++){
			ind2[i]=-1;
			ind3[i]=-1;
		}
		for(int i=0;i<m;i++){
			cin>>cc[i]>>dd[i];
			ind[i].clear();
			cc[i]--;
			dd[i]--;
			ind2[dd[i]]=i;
			ind3[cc[i]]=i;
			ee=dd[i];
		/*	dfs(cc[i]);
			pre[i]=tt;
			for(auto j:tt){
				ind[i][j]++;
			}*/
			
		}

		dfs3(0);
		for(int j=1;j<20;j++){
			for(int i=0;i<n;i++){
				if(par[i][j-1]==-1){
					par[i][j]=-1;
				}
				else{
					par[i][j]=par[par[i][j-1]][j-1];
				}
			}
		}
		for(int i=0;i<m;i++){
			int x=lca(cc[i],dd[i]);
		///	cout<<cc[i]<<":"<<dd[i]<<":"<<x<<endl;
			int j=cc[i];
			while(j!=-1){
				if(lev[j]<lev[x]){
					break;
				}
				if(ind3[j]>=0 and ind3[j]!=i){
					adj2[i].pb(ind3[j]);
					//cout<<i<<":"<<ind3[j]<<endl;
				}
				if(ind2[j]>=0 and ind2[j]!=i){
					adj2[ind2[j]].pb(i);
					//cout<<ind2[j]<<":"<<i<<endl;
				}
				j=up[j];
			}
			j=dd[i];
			while(j!=-1){
				if(lev[j]<lev[x]){
					break;
				}
				if(ind3[j]>=0 and ind3[j]!=i){
					adj2[i].pb(ind3[j]);
					//cout<<i<<":"<<ind3[j]<<endl;
				}
				if(ind2[j]>=0 and ind2[j]!=i){
					adj2[ind2[j]].pb(i);
					//cout<<ind2[j]<<":"<<i<<endl;
				}
				j=up[j];
			}
			//cout<<endl;
		/*	for(auto j:pre[i]){
				if(ind3[j]>=0 and ind3[j]!=i){
					adj2[i].pb(ind3[j]);
					//cout<<i<<":"<<ind3[j]<<endl;
				}
				if(ind2[j]>=0 and ind2[j]!=i){
					adj2[ind2[j]].pb(i);
				//	cout<<ind2[j]<<":"<<i<<endl;
				}
			}*/
		}
		for(int i=0;i<m;i++){
			vis2[i]=0;
		}
		for(int i=0;i<m;i++){
			if(vis2[i]==0){
				dfs2(i);
			}
		}
		if(stt==0){
			cout<<"No"<<endl;
		}
		else{
			cout<<"Yes"<<endl;
		}

	/*	string ans="No";
		vector<int> ss;
		for(int i=0;i<m;i++){
			ss.pb(i);
		}
		while(true){
			for(int j=0;j<n;j++){
				vis[j]=0;
			}
			for(int j=0;j<m;j++){
				vis[cc[j]]=1;
			}
			int ok=0;
			for(auto j:ss){
				vis[cc[j]]=0;
				for(auto i:pre[j]){
					if(vis[i]==1){
						ok++;
					}
				}
				vis[dd[j]]=1;
			}
			if(ok==0){
				ans="Yes";
			}

			if(next_permutation(ss.begin(),ss.end())){

			}
			else{
				break;
			}
		}
		cout<<ans<<endl;*/
		/*for(int i=0;i<m;i++){
			for(int j=0;j<m;j++){
				int co=0;
				if(i==j){
					continue;
				}
				if(ind[j].find(cc[i])!=ind[j].end()){
					if(ind[j].find(dd[i])!=ind[j].end()){
						ans="No";
					}
				}
				for(auto jj:pre[j]){
					if(ind[i].find(dd[j]))
				}
				if(ind[j].find(dd[i])!=ind[j].end()){
					if(ind[i].find(pre[j].back())!=ind[i].end()){
						ans="No";
						break;
					}
				}
			}
		}*/
	//	cout<<ans<<endl;
	}






	return 0;
}

Subtask #1
0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 17 ms 23764 KB Output is correct
2 Correct 14 ms 23764 KB Output is correct
3 Correct 13 ms 23740 KB Output is correct
4 Correct 19 ms 23840 KB Output is correct
5 Correct 29 ms 23888 KB Output is correct
6 Correct 12 ms 23892 KB Output is correct
7 Correct 13 ms 23796 KB Output is correct
8 Correct 14 ms 23892 KB Output is correct
9 Correct 57 ms 26912 KB Output is correct
10 Correct 74 ms 47620 KB Output is correct
11 Correct 18 ms 23764 KB Output is correct
12 Correct 57 ms 24024 KB Output is correct
13 Correct 147 ms 77008 KB Output is correct
14 Correct 194 ms 92504 KB Output is correct
15 Execution timed out 5078 ms 1048576 KB Time limit exceeded
16 Halted 0 ms 0 KB -

Subtask #2
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 12 ms 23764 KB Output is correct
2 Correct 14 ms 23764 KB Output is correct
3 Correct 14 ms 23892 KB Output is correct
4 Correct 17 ms 23920 KB Output is correct
5 Correct 18 ms 23848 KB Output is correct
6 Correct 16 ms 23848 KB Output is correct
7 Correct 14 ms 23892 KB Output is correct
8 Correct 14 ms 23892 KB Output is correct
9 Correct 14 ms 23836 KB Output is correct
10 Correct 14 ms 23880 KB Output is correct
11 Correct 15 ms 23800 KB Output is correct
12 Correct 13 ms 23892 KB Output is correct
13 Correct 17 ms 23892 KB Output is correct

Subtask #3
16.0 / 16.0

# 결과 실행 시간 메모리 Grader output
1 Correct 12 ms 23764 KB Output is correct
2 Correct 14 ms 23764 KB Output is correct
3 Correct 14 ms 23892 KB Output is correct
4 Correct 17 ms 23920 KB Output is correct
5 Correct 18 ms 23848 KB Output is correct
6 Correct 16 ms 23848 KB Output is correct
7 Correct 14 ms 23892 KB Output is correct
8 Correct 14 ms 23892 KB Output is correct
9 Correct 14 ms 23836 KB Output is correct
10 Correct 14 ms 23880 KB Output is correct
11 Correct 15 ms 23800 KB Output is correct
12 Correct 13 ms 23892 KB Output is correct
13 Correct 17 ms 23892 KB Output is correct
14 Correct 14 ms 23756 KB Output is correct
15 Correct 15 ms 23816 KB Output is correct
16 Correct 15 ms 23892 KB Output is correct
17 Correct 16 ms 23920 KB Output is correct
18 Correct 16 ms 23848 KB Output is correct
19 Correct 13 ms 23776 KB Output is correct
20 Correct 14 ms 23860 KB Output is correct
21 Correct 15 ms 23892 KB Output is correct
22 Correct 14 ms 23864 KB Output is correct
23 Correct 13 ms 23764 KB Output is correct
24 Correct 14 ms 23824 KB Output is correct
25 Correct 17 ms 23832 KB Output is correct
26 Correct 13 ms 23764 KB Output is correct
27 Correct 16 ms 23924 KB Output is correct
28 Correct 13 ms 23764 KB Output is correct

Subtask #4
28.0 / 28.0

# 결과 실행 시간 메모리 Grader output
1 Correct 12 ms 23764 KB Output is correct
2 Correct 14 ms 23764 KB Output is correct
3 Correct 14 ms 23892 KB Output is correct
4 Correct 17 ms 23920 KB Output is correct
5 Correct 18 ms 23848 KB Output is correct
6 Correct 16 ms 23848 KB Output is correct
7 Correct 14 ms 23892 KB Output is correct
8 Correct 14 ms 23892 KB Output is correct
9 Correct 14 ms 23836 KB Output is correct
10 Correct 14 ms 23880 KB Output is correct
11 Correct 15 ms 23800 KB Output is correct
12 Correct 13 ms 23892 KB Output is correct
13 Correct 17 ms 23892 KB Output is correct
14 Correct 14 ms 23756 KB Output is correct
15 Correct 15 ms 23816 KB Output is correct
16 Correct 15 ms 23892 KB Output is correct
17 Correct 16 ms 23920 KB Output is correct
18 Correct 16 ms 23848 KB Output is correct
19 Correct 13 ms 23776 KB Output is correct
20 Correct 14 ms 23860 KB Output is correct
21 Correct 15 ms 23892 KB Output is correct
22 Correct 14 ms 23864 KB Output is correct
23 Correct 13 ms 23764 KB Output is correct
24 Correct 14 ms 23824 KB Output is correct
25 Correct 17 ms 23832 KB Output is correct
26 Correct 13 ms 23764 KB Output is correct
27 Correct 16 ms 23924 KB Output is correct
28 Correct 13 ms 23764 KB Output is correct
29 Correct 17 ms 23968 KB Output is correct
30 Correct 14 ms 23912 KB Output is correct
31 Correct 14 ms 23972 KB Output is correct
32 Correct 14 ms 23804 KB Output is correct
33 Correct 14 ms 23892 KB Output is correct
34 Correct 15 ms 23892 KB Output is correct
35 Correct 18 ms 23892 KB Output is correct
36 Correct 14 ms 23876 KB Output is correct
37 Correct 14 ms 23928 KB Output is correct

Subtask #5
12.0 / 12.0

# 결과 실행 시간 메모리 Grader output
1 Correct 12 ms 23764 KB Output is correct
2 Correct 14 ms 23764 KB Output is correct
3 Correct 14 ms 23892 KB Output is correct
4 Correct 17 ms 23920 KB Output is correct
5 Correct 18 ms 23848 KB Output is correct
6 Correct 16 ms 23848 KB Output is correct
7 Correct 14 ms 23892 KB Output is correct
8 Correct 14 ms 23892 KB Output is correct
9 Correct 14 ms 23836 KB Output is correct
10 Correct 14 ms 23880 KB Output is correct
11 Correct 15 ms 23800 KB Output is correct
12 Correct 13 ms 23892 KB Output is correct
13 Correct 17 ms 23892 KB Output is correct
14 Correct 14 ms 23756 KB Output is correct
15 Correct 15 ms 23816 KB Output is correct
16 Correct 15 ms 23892 KB Output is correct
17 Correct 16 ms 23920 KB Output is correct
18 Correct 16 ms 23848 KB Output is correct
19 Correct 13 ms 23776 KB Output is correct
20 Correct 14 ms 23860 KB Output is correct
21 Correct 15 ms 23892 KB Output is correct
22 Correct 14 ms 23864 KB Output is correct
23 Correct 13 ms 23764 KB Output is correct
24 Correct 14 ms 23824 KB Output is correct
25 Correct 17 ms 23832 KB Output is correct
26 Correct 13 ms 23764 KB Output is correct
27 Correct 16 ms 23924 KB Output is correct
28 Correct 13 ms 23764 KB Output is correct
29 Correct 17 ms 23968 KB Output is correct
30 Correct 14 ms 23912 KB Output is correct
31 Correct 14 ms 23972 KB Output is correct
32 Correct 14 ms 23804 KB Output is correct
33 Correct 14 ms 23892 KB Output is correct
34 Correct 15 ms 23892 KB Output is correct
35 Correct 18 ms 23892 KB Output is correct
36 Correct 14 ms 23876 KB Output is correct
37 Correct 14 ms 23928 KB Output is correct
38 Correct 60 ms 27156 KB Output is correct
39 Correct 72 ms 48656 KB Output is correct
40 Correct 53 ms 26160 KB Output is correct
41 Correct 49 ms 25064 KB Output is correct
42 Correct 44 ms 26464 KB Output is correct
43 Correct 36 ms 25072 KB Output is correct
44 Correct 20 ms 24396 KB Output is correct
45 Correct 83 ms 39280 KB Output is correct
46 Correct 97 ms 39236 KB Output is correct
47 Correct 70 ms 42900 KB Output is correct
48 Correct 67 ms 43000 KB Output is correct
49 Correct 70 ms 39432 KB Output is correct
50 Correct 74 ms 39360 KB Output is correct
51 Correct 82 ms 40432 KB Output is correct
52 Correct 67 ms 40652 KB Output is correct
53 Correct 26 ms 24964 KB Output is correct
54 Correct 95 ms 39240 KB Output is correct

Subtask #6
11.0 / 11.0

# 결과 실행 시간 메모리 Grader output
1 Correct 13 ms 23804 KB Output is correct
2 Correct 14 ms 23764 KB Output is correct
3 Correct 17 ms 23764 KB Output is correct
4 Correct 14 ms 23796 KB Output is correct
5 Correct 19 ms 24032 KB Output is correct
6 Correct 14 ms 23884 KB Output is correct
7 Correct 14 ms 23892 KB Output is correct
8 Correct 14 ms 23796 KB Output is correct
9 Correct 16 ms 23788 KB Output is correct
10 Correct 16 ms 23764 KB Output is correct
11 Correct 14 ms 23764 KB Output is correct
12 Correct 15 ms 23920 KB Output is correct
13 Correct 32 ms 24108 KB Output is correct
14 Correct 39 ms 24012 KB Output is correct
15 Correct 36 ms 23916 KB Output is correct
16 Correct 89 ms 39536 KB Output is correct
17 Correct 184 ms 46640 KB Output is correct
18 Correct 360 ms 72008 KB Output is correct
19 Correct 114 ms 40312 KB Output is correct
20 Correct 119 ms 39692 KB Output is correct
21 Correct 83 ms 39676 KB Output is correct
22 Correct 137 ms 48328 KB Output is correct
23 Correct 129 ms 48080 KB Output is correct
24 Correct 135 ms 46388 KB Output is correct
25 Correct 125 ms 46768 KB Output is correct
26 Correct 122 ms 48320 KB Output is correct
27 Correct 191 ms 49872 KB Output is correct
28 Correct 187 ms 51848 KB Output is correct
29 Correct 167 ms 50112 KB Output is correct
30 Correct 151 ms 46256 KB Output is correct
31 Correct 125 ms 46144 KB Output is correct
32 Correct 130 ms 46336 KB Output is correct
33 Correct 139 ms 45888 KB Output is correct

Subtask #7
0 / 23.0

# 결과 실행 시간 메모리 Grader output
1 Correct 17 ms 23764 KB Output is correct
2 Correct 14 ms 23764 KB Output is correct
3 Correct 13 ms 23740 KB Output is correct
4 Correct 19 ms 23840 KB Output is correct
5 Correct 29 ms 23888 KB Output is correct
6 Correct 12 ms 23892 KB Output is correct
7 Correct 13 ms 23796 KB Output is correct
8 Correct 14 ms 23892 KB Output is correct
9 Correct 57 ms 26912 KB Output is correct
10 Correct 74 ms 47620 KB Output is correct
11 Correct 18 ms 23764 KB Output is correct
12 Correct 57 ms 24024 KB Output is correct
13 Correct 147 ms 77008 KB Output is correct
14 Correct 194 ms 92504 KB Output is correct
15 Execution timed out 5078 ms 1048576 KB Time limit exceeded
16 Halted 0 ms 0 KB -