oj.uz

Submission #890518

# Submission time Handle Problem Language Result Execution time Memory
890518 2023-12-21T11:53:49 Z amirhoseinfar1385 Jail (JOI22_jail) C++17
61 / 100
 5000 ms 28176 KB 
#include<bits/stdc++.h>
using namespace std;
const int maxn=120000+10,maxl=18;
vector<int>adj[maxn];
int n,m,timea=0,alln[maxn],lca[maxl][maxn],ted[maxn],high[maxn];
pair<int,int>allq[maxn],stf[maxn];

int zird(int u,int v){
	return stf[v].first<=stf[u].first&&stf[v].second>=stf[u].second;
}

int getlca(int u,int v){
	if(zird(u,v)){
		return v;
	}
	if(zird(v,u)){
		return u;
	}
	for(int i=maxl-1;i>=0;i--){
		if(lca[i][u]!=0&&zird(v,lca[i][u])==0){
			u=lca[i][u];
		}
	}
	return lca[0][u];
}

void callca(){
	for(int i=1;i<maxl;i++){
		for(int j=1;j<=n;j++){
			lca[i][j]=lca[i-1][lca[i-1][j]];
		}
	}
}

void dfs(int u=1,int par=0){
	lca[0][u]=par;
	timea++;
	stf[u].first=timea;
	for(auto x:adj[u]){
		if(x!=par){
			high[x]=high[u]+1;
			dfs(x,u);
		}
	}
	stf[u].second=timea;
}

void vorod(){
	timea=0;
	cin>>n;
//	seg.clear();
	for(int i=1;i<=n;i++){
		adj[i].clear();
		alln[i]=-1;
	}
	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=1;i<=m;i++){
		ted[i]=0;
		cin>>allq[i].first>>allq[i].second;
		alln[allq[i].first]=i;
		alln[allq[i].second]=i;
	}	
}

int dis(int u,int v){
	int uv=getlca(u,v);
	return high[u]+high[v]-2*high[uv];
}

int din(int uv,int u,int v){
	int a=dis(u,v),b=dis(uv,u),c=dis(uv,v);
	//cout<<uv<<" "<<u<<" "<<v<<" "<<a<<" "<<b<<" "<<c<<endl;
	if(b+c==a){
		return 1;
	}
	return 0;
}


void psolve(){
	for(int i=1;i<=m;i++){
		for(int j=1;j<=m;j++){
			if(i!=j){
				//cout<<i<<" "<<j<<" wtf "<<allq[i].first<<" "<<allq[i].second<<" "<<allq[j].first<<" "<<allq[j].second<<"\n";
				if(din(allq[j].first,allq[i].first,allq[i].second)){
					ted[i]++;
				}
				if(din(allq[i].second,allq[j].first,allq[j].second)){
					ted[i]++;
				}
			}
		}
	}
	set<pair<int,int>>st;
	for(int i=1;i<=m;i++){
		//cout<<"now: "<<ted[i]<<" "<<i<<"\n";
		st.insert(make_pair(ted[i],i));
	}
	while((int)st.size()>0){
		auto x=*st.begin();
		if(x.first!=0){
			//cout<<x.first<<" "<<x.second<<endl;
			cout<<"No\n";
			return ;
		}
		st.erase(x);
		int i=x.second;
		for(int j=1;j<=m;j++){
			if(i!=j){
				if(din(allq[i].first,allq[j].first,allq[j].second)){
					st.erase(make_pair(ted[j],j));
					ted[j]--;
					st.insert(make_pair(ted[j],j));
				}
				if(din(allq[j].second,allq[i].first,allq[i].second)){
					st.erase(make_pair(ted[j],j));
					ted[j]--;
					st.insert(make_pair(ted[j],j));
				}
			}
		}
	}
	cout<<"Yes\n";
	return ;
}

int main(){
	ios::sync_with_stdio(0);
	cin.tie(0);
	cout.tie(0);
	int t;
	cin>>t;
	for(int asd=0;asd<t;asd++){
		vorod();
		dfs();
		callca();
		psolve();
	}
}

Subtask #1
0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 14680 KB Output is correct
2 Correct 2 ms 14824 KB Output is correct
3 Correct 2 ms 14680 KB Output is correct
4 Correct 8 ms 15196 KB Output is correct
5 Correct 15 ms 15452 KB Output is correct
6 Correct 3 ms 14684 KB Output is correct
7 Correct 3 ms 14684 KB Output is correct
8 Correct 9 ms 14924 KB Output is correct
9 Correct 183 ms 16852 KB Output is correct
10 Correct 67 ms 27476 KB Output is correct
11 Correct 7 ms 14940 KB Output is correct
12 Correct 78 ms 15800 KB Output is correct
13 Execution timed out 5061 ms 28176 KB Time limit exceeded
14 Halted 0 ms 0 KB -

Subtask #2
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 14684 KB Output is correct
2 Correct 2 ms 14828 KB Output is correct
3 Correct 3 ms 14684 KB Output is correct
4 Correct 3 ms 14684 KB Output is correct
5 Correct 3 ms 14684 KB Output is correct
6 Correct 3 ms 14684 KB Output is correct
7 Correct 3 ms 14684 KB Output is correct
8 Correct 3 ms 14892 KB Output is correct
9 Correct 3 ms 14684 KB Output is correct
10 Correct 3 ms 14684 KB Output is correct
11 Correct 3 ms 14684 KB Output is correct
12 Correct 2 ms 14684 KB Output is correct
13 Correct 2 ms 14684 KB Output is correct

Subtask #3
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 14684 KB Output is correct
2 Correct 2 ms 14828 KB Output is correct
3 Correct 3 ms 14684 KB Output is correct
4 Correct 3 ms 14684 KB Output is correct
5 Correct 3 ms 14684 KB Output is correct
6 Correct 3 ms 14684 KB Output is correct
7 Correct 3 ms 14684 KB Output is correct
8 Correct 3 ms 14892 KB Output is correct
9 Correct 3 ms 14684 KB Output is correct
10 Correct 3 ms 14684 KB Output is correct
11 Correct 3 ms 14684 KB Output is correct
12 Correct 2 ms 14684 KB Output is correct
13 Correct 2 ms 14684 KB Output is correct
14 Correct 2 ms 14680 KB Output is correct
15 Correct 2 ms 14684 KB Output is correct
16 Correct 3 ms 14684 KB Output is correct
17 Correct 4 ms 14684 KB Output is correct
18 Correct 3 ms 14680 KB Output is correct
19 Correct 2 ms 14684 KB Output is correct
20 Correct 3 ms 14684 KB Output is correct
21 Correct 3 ms 14684 KB Output is correct
22 Correct 3 ms 14900 KB Output is correct
23 Correct 2 ms 14684 KB Output is correct
24 Correct 2 ms 14684 KB Output is correct
25 Correct 3 ms 14684 KB Output is correct
26 Correct 2 ms 14684 KB Output is correct
27 Correct 3 ms 14680 KB Output is correct
28 Correct 2 ms 14684 KB Output is correct

Subtask #4
28.0 / 28.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 14684 KB Output is correct
2 Correct 2 ms 14828 KB Output is correct
3 Correct 3 ms 14684 KB Output is correct
4 Correct 3 ms 14684 KB Output is correct
5 Correct 3 ms 14684 KB Output is correct
6 Correct 3 ms 14684 KB Output is correct
7 Correct 3 ms 14684 KB Output is correct
8 Correct 3 ms 14892 KB Output is correct
9 Correct 3 ms 14684 KB Output is correct
10 Correct 3 ms 14684 KB Output is correct
11 Correct 3 ms 14684 KB Output is correct
12 Correct 2 ms 14684 KB Output is correct
13 Correct 2 ms 14684 KB Output is correct
14 Correct 2 ms 14680 KB Output is correct
15 Correct 2 ms 14684 KB Output is correct
16 Correct 3 ms 14684 KB Output is correct
17 Correct 4 ms 14684 KB Output is correct
18 Correct 3 ms 14680 KB Output is correct
19 Correct 2 ms 14684 KB Output is correct
20 Correct 3 ms 14684 KB Output is correct
21 Correct 3 ms 14684 KB Output is correct
22 Correct 3 ms 14900 KB Output is correct
23 Correct 2 ms 14684 KB Output is correct
24 Correct 2 ms 14684 KB Output is correct
25 Correct 3 ms 14684 KB Output is correct
26 Correct 2 ms 14684 KB Output is correct
27 Correct 3 ms 14680 KB Output is correct
28 Correct 2 ms 14684 KB Output is correct
29 Correct 9 ms 14916 KB Output is correct
30 Correct 20 ms 15164 KB Output is correct
31 Correct 15 ms 14680 KB Output is correct
32 Correct 20 ms 14836 KB Output is correct
33 Correct 5 ms 14684 KB Output is correct
34 Correct 40 ms 14888 KB Output is correct
35 Correct 45 ms 14680 KB Output is correct
36 Correct 41 ms 14680 KB Output is correct
37 Correct 36 ms 14684 KB Output is correct

Subtask #5
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 14684 KB Output is correct
2 Correct 2 ms 14828 KB Output is correct
3 Correct 3 ms 14684 KB Output is correct
4 Correct 3 ms 14684 KB Output is correct
5 Correct 3 ms 14684 KB Output is correct
6 Correct 3 ms 14684 KB Output is correct
7 Correct 3 ms 14684 KB Output is correct
8 Correct 3 ms 14892 KB Output is correct
9 Correct 3 ms 14684 KB Output is correct
10 Correct 3 ms 14684 KB Output is correct
11 Correct 3 ms 14684 KB Output is correct
12 Correct 2 ms 14684 KB Output is correct
13 Correct 2 ms 14684 KB Output is correct
14 Correct 2 ms 14680 KB Output is correct
15 Correct 2 ms 14684 KB Output is correct
16 Correct 3 ms 14684 KB Output is correct
17 Correct 4 ms 14684 KB Output is correct
18 Correct 3 ms 14680 KB Output is correct
19 Correct 2 ms 14684 KB Output is correct
20 Correct 3 ms 14684 KB Output is correct
21 Correct 3 ms 14684 KB Output is correct
22 Correct 3 ms 14900 KB Output is correct
23 Correct 2 ms 14684 KB Output is correct
24 Correct 2 ms 14684 KB Output is correct
25 Correct 3 ms 14684 KB Output is correct
26 Correct 2 ms 14684 KB Output is correct
27 Correct 3 ms 14680 KB Output is correct
28 Correct 2 ms 14684 KB Output is correct
29 Correct 9 ms 14916 KB Output is correct
30 Correct 20 ms 15164 KB Output is correct
31 Correct 15 ms 14680 KB Output is correct
32 Correct 20 ms 14836 KB Output is correct
33 Correct 5 ms 14684 KB Output is correct
34 Correct 40 ms 14888 KB Output is correct
35 Correct 45 ms 14680 KB Output is correct
36 Correct 41 ms 14680 KB Output is correct
37 Correct 36 ms 14684 KB Output is correct
38 Correct 181 ms 16680 KB Output is correct
39 Correct 67 ms 27716 KB Output is correct
40 Correct 1405 ms 16720 KB Output is correct
41 Correct 1734 ms 16536 KB Output is correct
42 Correct 1261 ms 16784 KB Output is correct
43 Correct 36 ms 16212 KB Output is correct
44 Correct 968 ms 15188 KB Output is correct
45 Correct 194 ms 20048 KB Output is correct
46 Correct 189 ms 20060 KB Output is correct
47 Correct 546 ms 23960 KB Output is correct
48 Correct 521 ms 23964 KB Output is correct
49 Correct 287 ms 20632 KB Output is correct
50 Correct 326 ms 20388 KB Output is correct
51 Correct 77 ms 21448 KB Output is correct
52 Correct 77 ms 21328 KB Output is correct
53 Correct 1025 ms 15404 KB Output is correct
54 Correct 161 ms 20212 KB Output is correct

Subtask #6
0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 14680 KB Output is correct
2 Correct 2 ms 14832 KB Output is correct
3 Correct 2 ms 14820 KB Output is correct
4 Correct 2 ms 14680 KB Output is correct
5 Correct 8 ms 14940 KB Output is correct
6 Correct 2 ms 14684 KB Output is correct
7 Correct 3 ms 14684 KB Output is correct
8 Correct 2 ms 14828 KB Output is correct
9 Correct 3 ms 14684 KB Output is correct
10 Correct 2 ms 14832 KB Output is correct
11 Correct 2 ms 14684 KB Output is correct
12 Correct 41 ms 14900 KB Output is correct
13 Correct 304 ms 15196 KB Output is correct
14 Correct 275 ms 15712 KB Output is correct
15 Correct 317 ms 15472 KB Output is correct
16 Execution timed out 5043 ms 20316 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 14680 KB Output is correct
2 Correct 2 ms 14824 KB Output is correct
3 Correct 2 ms 14680 KB Output is correct
4 Correct 8 ms 15196 KB Output is correct
5 Correct 15 ms 15452 KB Output is correct
6 Correct 3 ms 14684 KB Output is correct
7 Correct 3 ms 14684 KB Output is correct
8 Correct 9 ms 14924 KB Output is correct
9 Correct 183 ms 16852 KB Output is correct
10 Correct 67 ms 27476 KB Output is correct
11 Correct 7 ms 14940 KB Output is correct
12 Correct 78 ms 15800 KB Output is correct
13 Execution timed out 5061 ms 28176 KB Time limit exceeded
14 Halted 0 ms 0 KB -