oj.uz

Submission #784902

# Submission time Handle Problem Language Result Execution time Memory
784902 2023-07-16T17:50:28 Z kshitij_sodani Long Mansion (JOI17_long_mansion) C++14
25 / 100
 784 ms 59776 KB 
#include <bits/stdc++.h>
using namespace std;
#define a first
#define b second
#define pb push_back
typedef long long llo;
#define endl '\n'
 
int n;
int it[500001];
int cur[500001];
int le[500001];
int re[500001];
vector<int> pre[500001];
int tree[4*500001][2];
pair<int,int> tree2[500001];
void build(int no,int l,int r){
	if(l==r){
		tree[no][0]=le[l];
		tree[no][1]=re[l];
		tree2[no]={l,l};
	}
	else{
		int mid=(l+r)/2;
		build(no*2+1,l,mid);
		build(no*2+2,mid+1,r);
		tree[no][0]=min(tree[no*2+1][0],tree[no*2+2][0]);
		tree[no][1]=max(tree[no*2+1][1],tree[no*2+2][1]);
		tree2[no].a=tree2[no*2+1].a;
		tree2[no].b=tree2[no*2+2].b;
	}
}
pair<int,int> query(int no,int l,int r,int aa,int bb){
	if(r<aa or l>bb or aa>bb){
		return {n,0}; 
	}
	if(aa<=l and r<=bb){
		return tree2[no];
	}
	int mid=(l+r)/2;
	pair<int,int> x=query(no*2+1,l,mid,aa,bb);
	pair<int,int> y=query(no*2+2,mid+1,r,aa,bb);
	return {min(x.a,y.a),max(x.b,y.b)};
}
void update(int no,int l,int r,int i,pair<int,int> x){
	if(l==r){
		tree2[no]=x;
	}
	else{
		int mid=(l+r)/2;
		if(i<=mid){
			update(no*2+1,l,mid,i,x);
		}
		else{
			update(no*2+2,mid+1,r,i,x);
		}
		tree2[no].a=min(tree2[no*2+1].a,tree2[no*2+2].a);
		tree2[no].b=max(tree2[no*2+1].b,tree2[no*2+2].b);
	}
}
int query2(int no,int l,int r,int i,int x){
	if(r<i){
		return r+1;
	}
	if(l==r and tree[no][0]<x){
		return l;
	}
	if(tree[no][0]>=x){
		return r+1;
	}
	int mid=(l+r)/2;
	int xx=query2(no*2+1,l,mid,i,x);
	if(xx==mid+1){
		return query2(no*2+2,mid+1,r,i,x);
	}
	return xx;
}
int query3(int no,int l,int r,int i,int x){
	//return largest index<=i with r value >x
	if(l>i){
		return l-1;
	}
	if(l==r and tree[no][1]>x){
		return l;
	}
	if(tree[no][1]<=x){
		return l-1;
	}
	int mid=(l+r)/2;
	int xx=query3(no*2+2,mid+1,r,i,x);
	if(xx==mid){
		return query3(no*2+1,l,mid,i,x);
	}
	return xx;

}
pair<int,int> ans[500001];
int main(){
	ios_base::sync_with_stdio(false);
	cin.tie(NULL);
	cin>>n;
	for(int i=0;i<n-1;i++){
		cin>>it[i];
		it[i]--;
	}
	for(int i=0;i<n;i++){
		int x;
		cin>>x;
		for(int j=0;j<x;j++){
			int y;
			cin>>y;
			y--;
			pre[i].pb(y);
		}
	}
	for(int i=0;i<n;i++){
		cur[i]=-1;
	}
	le[0]=-1;
	for(int i=0;i<n;i++){
		if(i>0){
			le[i]=cur[it[i-1]];
		}
		for(auto j:pre[i]){
			cur[j]=i;
		}
	}
	re[n-1]=n+1;
	for(int i=0;i<n;i++){
		cur[i]=n+1;
	}
	for(int i=n-1;i>=0;i--){
		if(i<n-1){
			re[i]=cur[it[i]];
		}
		for(auto j:pre[i]){
			cur[j]=i;
		}
	}
	build(0,0,n-1);
/*	for(int i=0;i<n;i++){
		cout<<re[i]<<",";
	}
	cout<<endl;*/
	for(int i=0;i<n;i++){
		pair<int,int> cur={i,i};
		while(true){
			pair<int,int> cur2=cur;
			if(cur.b<n-1){
				int ind=query2(0,0,n-1,cur.b+1,cur.a);
				ind--;
				if(ind>cur.b){
					cur.b=ind;
				}
				cur=query(0,0,n-1,cur.a,cur.b);
			}
			if(cur.a>0){
				int ind=query3(0,0,n-1,cur.a-1,cur.b);
				/*if(i==1){
					cout<<cur.a<<":"<<cur.b<<endl;
					cout<<ind<<"::"<<endl;
				}*/
				ind++;
				if(ind<cur.a){
					cur.a=ind;
				}
				cur=query(0,0,n-1,cur.a,cur.b);
			}
			/*if(i==3){
					cout<<cur.a<<"::"<<cur.b<<endl;
			}*/
			if(cur2.a==cur.a and cur2.b==cur.b){
				break;
			}
		}
		ans[i]=cur;
		update(0,0,n-1,i,cur);
		//cout<<cur.a<<":"<<cur.b<<endl;

	}
		int q;
		cin>>q;
		while(q--){
			int x,y;
			cin>>x>>y;
			x--;
			y--;
			if(ans[x].a<=y and ans[x].b>=y){
				cout<<"YES"<<endl;
			}
			else{
				cout<<"NO"<<endl;
			}
		}



 
 
 
	return 0;
}

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 11 ms 12344 KB Output is correct
2 Correct 10 ms 12408 KB Output is correct
3 Correct 10 ms 12628 KB Output is correct
4 Correct 9 ms 12352 KB Output is correct
5 Correct 8 ms 12244 KB Output is correct
6 Correct 9 ms 12344 KB Output is correct
7 Correct 9 ms 12296 KB Output is correct

Subtask #2
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 11 ms 12344 KB Output is correct
2 Correct 10 ms 12408 KB Output is correct
3 Correct 10 ms 12628 KB Output is correct
4 Correct 9 ms 12352 KB Output is correct
5 Correct 8 ms 12244 KB Output is correct
6 Correct 9 ms 12344 KB Output is correct
7 Correct 9 ms 12296 KB Output is correct
8 Correct 91 ms 18252 KB Output is correct
9 Correct 90 ms 18160 KB Output is correct
10 Correct 86 ms 18588 KB Output is correct
11 Correct 88 ms 19020 KB Output is correct
12 Correct 84 ms 17676 KB Output is correct
13 Correct 88 ms 18308 KB Output is correct
14 Correct 85 ms 18316 KB Output is correct
15 Correct 89 ms 18312 KB Output is correct
16 Correct 80 ms 18112 KB Output is correct
17 Correct 99 ms 18440 KB Output is correct
18 Correct 85 ms 18364 KB Output is correct
19 Correct 85 ms 18352 KB Output is correct
20 Correct 102 ms 18328 KB Output is correct
21 Correct 81 ms 18188 KB Output is correct
22 Correct 84 ms 18228 KB Output is correct
23 Correct 84 ms 18132 KB Output is correct
24 Correct 89 ms 18104 KB Output is correct
25 Correct 91 ms 18124 KB Output is correct
26 Correct 89 ms 18096 KB Output is correct

Subtask #3
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 244 ms 31236 KB Output is correct
2 Correct 208 ms 31152 KB Output is correct
3 Correct 198 ms 30840 KB Output is correct
4 Correct 202 ms 31180 KB Output is correct
5 Correct 207 ms 31148 KB Output is correct
6 Correct 218 ms 29892 KB Output is correct
7 Correct 167 ms 29728 KB Output is correct
8 Correct 161 ms 29708 KB Output is correct
9 Correct 168 ms 29612 KB Output is correct
10 Correct 172 ms 29692 KB Output is correct
11 Correct 180 ms 29656 KB Output is correct

Subtask #4
0 / 75.0

# Verdict Execution time Memory Grader output
1 Correct 11 ms 12344 KB Output is correct
2 Correct 10 ms 12408 KB Output is correct
3 Correct 10 ms 12628 KB Output is correct
4 Correct 9 ms 12352 KB Output is correct
5 Correct 8 ms 12244 KB Output is correct
6 Correct 9 ms 12344 KB Output is correct
7 Correct 9 ms 12296 KB Output is correct
8 Correct 91 ms 18252 KB Output is correct
9 Correct 90 ms 18160 KB Output is correct
10 Correct 86 ms 18588 KB Output is correct
11 Correct 88 ms 19020 KB Output is correct
12 Correct 84 ms 17676 KB Output is correct
13 Correct 88 ms 18308 KB Output is correct
14 Correct 85 ms 18316 KB Output is correct
15 Correct 89 ms 18312 KB Output is correct
16 Correct 80 ms 18112 KB Output is correct
17 Correct 99 ms 18440 KB Output is correct
18 Correct 85 ms 18364 KB Output is correct
19 Correct 85 ms 18352 KB Output is correct
20 Correct 102 ms 18328 KB Output is correct
21 Correct 81 ms 18188 KB Output is correct
22 Correct 84 ms 18228 KB Output is correct
23 Correct 84 ms 18132 KB Output is correct
24 Correct 89 ms 18104 KB Output is correct
25 Correct 91 ms 18124 KB Output is correct
26 Correct 89 ms 18096 KB Output is correct
27 Correct 244 ms 31236 KB Output is correct
28 Correct 208 ms 31152 KB Output is correct
29 Correct 198 ms 30840 KB Output is correct
30 Correct 202 ms 31180 KB Output is correct
31 Correct 207 ms 31148 KB Output is correct
32 Correct 218 ms 29892 KB Output is correct
33 Correct 167 ms 29728 KB Output is correct
34 Correct 161 ms 29708 KB Output is correct
35 Correct 168 ms 29612 KB Output is correct
36 Correct 172 ms 29692 KB Output is correct
37 Correct 180 ms 29656 KB Output is correct
38 Incorrect 784 ms 59776 KB Output isn't correct
39 Halted 0 ms 0 KB -