oj.uz

답안 #952106

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
952106 2024-03-23T05:53:45 Z ting39 Jail (JOI22_jail) C++17
49 / 100
 959 ms 1048576 KB 
#include<bits/stdc++.h>
#define int long long
#define pii pair<int,int>
#define F first
#define S second
using namespace std;
vector<vector<int>> g,ng;
vector<int> s,t,dep,jump[18],in,out;
int tme=0;
struct BIT{
	int n,m;
	vector<vector<int>> b;
	BIT(int _n,int _m):n(_n),m(_m){
		b.resize(n+1,vector<int>(m));
	}
	void add(int x,int k,int val){
		for(int i=x;i<=n;i+=i&-i){
			b[i][k]+=val;
		}
	}
	vector<int> qry(int x){
		vector<int> ret(m);
		for(int i=x;i>0;i-=i&-i){
			for(int j=0;j<m;j++){
				ret[j]+=b[i][j];
			}
		}
		return ret;
	}
};
void dfs(int pre,int pos){
	in[pos]=tme;
	tme++;
	for(int i:g[pos]){
		if(i==pre) continue;
		dep[i]=dep[pos]+1;
		jump[0][i]=pos;
		dfs(pos,i);
	}
	out[pos]=tme;
	tme++;
}
int lca(int x,int y){
	if(dep[x]<dep[y]) swap(x,y);
	int dif=dep[x]-dep[y],cnt=0;//cout<<x<<' '<<y<<' '<<dif<<endl;
	while(dif){
		if(dif&1) x=jump[cnt][x];
		cnt++;
		dif>>=1;
	}//cout<<x<<' '<<y<<endl;
	if(x==y) return x;
	for(int i=17;i>=0;i--){
		if(jump[i][x]!=jump[i][y]){
			x=jump[i][x];
			y=jump[i][y];
		}//cout<<x<<' '<<y<<endl;
	}
	return jump[0][x];
}
vector<int> merge(vector<int> x,vector<int> y,int c){//cout<<"ok"<<endl;
	//for(int i:x) cout<<i<<' ';cout<<endl;for(int i:y) cout<<i<<' ';cout<<endl;
	for(int i=0;i<x.size();i++){
		x[i]+=y[i]*c;
	}
	//for(int i:x) cout<<i<<' ';cout<<endl;
	return x;
}
vector<int> search(int x,int y,BIT *Bit){
	vector<int> ret;
	int LCA=lca(x,y);//cout<<LCA<<endl;
	ret=merge(Bit->qry(in[x]+1),Bit->qry(in[y]+1),1);
	ret=merge(ret,Bit->qry(in[LCA]+1),-1);
	ret=merge(ret,Bit->qry(in[LCA]),-1);//for(int i:ret) cout<<i<<' ';cout<<endl;
	return ret;
}
void insert(int p,int x,BIT *Bit){
	Bit->add(in[p]+1,x,1);
	Bit->add(out[p]+1,x,-1);
}
signed main(){
	int tt;
	cin>>tt;
	while(tt--){
		tme=0;
		int n;
		cin>>n;
		g.clear();
		ng.clear();
		for(auto &i:jump){
			i.resize(n,0);
		}
		dep.resize(n,0);
		g.resize(n);
		in.resize(n);
		out.resize(n);
		for(int i=0;i<n-1;i++){
			int a,b;
			cin>>a>>b;
			a--;
			b--;
			g[a].push_back(b);
			g[b].push_back(a);
		}
		int m;
		cin>>m;
		ng.resize(m);
		s.resize(m);
		t.resize(m);
		dfs(0,0);
		for(int i=1;i<18;i++){
			for(int j=0;j<n;j++){
				jump[i][j]=jump[i-1][jump[i-1][j]];
			}
		}
		BIT bits1(n*2,m),bitt1(n*2,m),bits2(n*2,m),bitt2(n*2,m);
		for(int i=0;i<m;i++){
			cin>>s[i]>>t[i];
			s[i]--;
			t[i]--;//cout<<s[i]<<' '<<t[i]<<endl;
		}
		vector<int> du(m);
		for(int i=0;i<m;i++){
			vector<int> tmp1=search(s[i],t[i],&bits1),tmp2=search(s[i],t[i],&bitt1);
			//for(int j:tmp1) cout<<j<<' ';cout<<endl;
			for(int j=0;j<m;j++){
				if(tmp1[j]){
					ng[i].push_back(j);
					du[j]++;
					//cout<<i<<' '<<j<<endl;
				}
				if(tmp2[j]){
					ng[j].push_back(i);
					du[i]++;
					//cout<<j<<' '<<i<<endl;
				}
			}
			insert(s[i],i,&bits1);
			insert(t[i],i,&bitt1);
		}
		for(int i=m-1;i>=0;i--){
			vector<int> tmp1=search(s[i],t[i],&bits2),tmp2=search(s[i],t[i],&bitt2);
			//for(int j:tmp1) cout<<j<<' ';cout<<endl;
			for(int j=0;j<m;j++){
				if(tmp1[j]){
					ng[i].push_back(j);
					du[j]++;
					//cout<<i<<' '<<j<<endl;
				}
				if(tmp2[j]){
					ng[j].push_back(i);
					du[i]++;
					//cout<<j<<' '<<i<<endl;
				}
			}
			insert(s[i],i,&bits2);
			insert(t[i],i,&bitt2);
		}
		queue<int> q;
		for(int i=0;i<m;i++){
			if(!du[i]) q.push(i);
		}
		while(!q.empty()){
			int pos=q.front();
			q.pop();
			for(int i:ng[pos]){
				du[i]--;
				if(!du[i]) q.push(i);
			}
		}
		int ans=1;
		for(int i=0;i<m;i++){
			if(du[i]) ans=0;
		}
		if(ans) cout<<"Yes"<<endl;
		else cout<<"No"<<endl;
	}
}

Compilation message

jail.cpp: In function 'std::vector<long long int> merge(std::vector<long long int>, std::vector<long long int>, long long int)':
jail.cpp:62:15: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   62 |  for(int i=0;i<x.size();i++){
      |              ~^~~~~~~~~

Subtask #1
0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 37 ms 348 KB Output is correct
5 Correct 81 ms 1116 KB Output is correct
6 Correct 4 ms 604 KB Output is correct
7 Correct 4 ms 604 KB Output is correct
8 Correct 17 ms 2392 KB Output is correct
9 Correct 946 ms 195668 KB Output is correct
10 Runtime error 662 ms 1048576 KB Execution killed with signal 9
11 Halted 0 ms 0 KB -

Subtask #2
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 4 ms 604 KB Output is correct
4 Correct 4 ms 600 KB Output is correct
5 Correct 4 ms 600 KB Output is correct
6 Correct 4 ms 604 KB Output is correct
7 Correct 4 ms 604 KB Output is correct
8 Correct 4 ms 604 KB Output is correct
9 Correct 4 ms 604 KB Output is correct
10 Correct 4 ms 604 KB Output is correct
11 Correct 3 ms 604 KB Output is correct
12 Correct 2 ms 604 KB Output is correct
13 Correct 3 ms 604 KB Output is correct

Subtask #3
16.0 / 16.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 4 ms 604 KB Output is correct
4 Correct 4 ms 600 KB Output is correct
5 Correct 4 ms 600 KB Output is correct
6 Correct 4 ms 604 KB Output is correct
7 Correct 4 ms 604 KB Output is correct
8 Correct 4 ms 604 KB Output is correct
9 Correct 4 ms 604 KB Output is correct
10 Correct 4 ms 604 KB Output is correct
11 Correct 3 ms 604 KB Output is correct
12 Correct 2 ms 604 KB Output is correct
13 Correct 3 ms 604 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 1 ms 348 KB Output is correct
16 Correct 4 ms 604 KB Output is correct
17 Correct 4 ms 604 KB Output is correct
18 Correct 4 ms 604 KB Output is correct
19 Correct 1 ms 348 KB Output is correct
20 Correct 4 ms 604 KB Output is correct
21 Correct 4 ms 604 KB Output is correct
22 Correct 4 ms 600 KB Output is correct
23 Correct 1 ms 348 KB Output is correct
24 Correct 1 ms 344 KB Output is correct
25 Correct 4 ms 600 KB Output is correct
26 Correct 2 ms 604 KB Output is correct
27 Correct 4 ms 604 KB Output is correct
28 Correct 1 ms 348 KB Output is correct

Subtask #4
28.0 / 28.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 4 ms 604 KB Output is correct
4 Correct 4 ms 600 KB Output is correct
5 Correct 4 ms 600 KB Output is correct
6 Correct 4 ms 604 KB Output is correct
7 Correct 4 ms 604 KB Output is correct
8 Correct 4 ms 604 KB Output is correct
9 Correct 4 ms 604 KB Output is correct
10 Correct 4 ms 604 KB Output is correct
11 Correct 3 ms 604 KB Output is correct
12 Correct 2 ms 604 KB Output is correct
13 Correct 3 ms 604 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 1 ms 348 KB Output is correct
16 Correct 4 ms 604 KB Output is correct
17 Correct 4 ms 604 KB Output is correct
18 Correct 4 ms 604 KB Output is correct
19 Correct 1 ms 348 KB Output is correct
20 Correct 4 ms 604 KB Output is correct
21 Correct 4 ms 604 KB Output is correct
22 Correct 4 ms 600 KB Output is correct
23 Correct 1 ms 348 KB Output is correct
24 Correct 1 ms 344 KB Output is correct
25 Correct 4 ms 600 KB Output is correct
26 Correct 2 ms 604 KB Output is correct
27 Correct 4 ms 604 KB Output is correct
28 Correct 1 ms 348 KB Output is correct
29 Correct 17 ms 2140 KB Output is correct
30 Correct 10 ms 2140 KB Output is correct
31 Correct 10 ms 2140 KB Output is correct
32 Correct 7 ms 1116 KB Output is correct
33 Correct 5 ms 860 KB Output is correct
34 Correct 14 ms 1628 KB Output is correct
35 Correct 14 ms 1884 KB Output is correct
36 Correct 13 ms 1628 KB Output is correct
37 Correct 9 ms 1728 KB Output is correct

Subtask #5
0 / 12.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 4 ms 604 KB Output is correct
4 Correct 4 ms 600 KB Output is correct
5 Correct 4 ms 600 KB Output is correct
6 Correct 4 ms 604 KB Output is correct
7 Correct 4 ms 604 KB Output is correct
8 Correct 4 ms 604 KB Output is correct
9 Correct 4 ms 604 KB Output is correct
10 Correct 4 ms 604 KB Output is correct
11 Correct 3 ms 604 KB Output is correct
12 Correct 2 ms 604 KB Output is correct
13 Correct 3 ms 604 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 1 ms 348 KB Output is correct
16 Correct 4 ms 604 KB Output is correct
17 Correct 4 ms 604 KB Output is correct
18 Correct 4 ms 604 KB Output is correct
19 Correct 1 ms 348 KB Output is correct
20 Correct 4 ms 604 KB Output is correct
21 Correct 4 ms 604 KB Output is correct
22 Correct 4 ms 600 KB Output is correct
23 Correct 1 ms 348 KB Output is correct
24 Correct 1 ms 344 KB Output is correct
25 Correct 4 ms 600 KB Output is correct
26 Correct 2 ms 604 KB Output is correct
27 Correct 4 ms 604 KB Output is correct
28 Correct 1 ms 348 KB Output is correct
29 Correct 17 ms 2140 KB Output is correct
30 Correct 10 ms 2140 KB Output is correct
31 Correct 10 ms 2140 KB Output is correct
32 Correct 7 ms 1116 KB Output is correct
33 Correct 5 ms 860 KB Output is correct
34 Correct 14 ms 1628 KB Output is correct
35 Correct 14 ms 1884 KB Output is correct
36 Correct 13 ms 1628 KB Output is correct
37 Correct 9 ms 1728 KB Output is correct
38 Correct 959 ms 195628 KB Output is correct
39 Runtime error 441 ms 1048576 KB Execution killed with signal 9
40 Halted 0 ms 0 KB -

Subtask #6
0 / 11.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 22 ms 604 KB Output is correct
6 Correct 3 ms 600 KB Output is correct
7 Correct 2 ms 604 KB Output is correct
8 Correct 1 ms 348 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 1 ms 348 KB Output is correct
12 Correct 13 ms 1628 KB Output is correct
13 Correct 142 ms 1740 KB Output is correct
14 Correct 138 ms 1620 KB Output is correct
15 Correct 150 ms 1588 KB Output is correct
16 Runtime error 442 ms 1048576 KB Execution killed with signal 9
17 Halted 0 ms 0 KB -

Subtask #7
0 / 23.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 37 ms 348 KB Output is correct
5 Correct 81 ms 1116 KB Output is correct
6 Correct 4 ms 604 KB Output is correct
7 Correct 4 ms 604 KB Output is correct
8 Correct 17 ms 2392 KB Output is correct
9 Correct 946 ms 195668 KB Output is correct
10 Runtime error 662 ms 1048576 KB Execution killed with signal 9
11 Halted 0 ms 0 KB -