oj.uz

Submission #346810

# Submission time Handle Problem Language Result Execution time Memory
346810 2021-01-11T06:25:06 Z kshitij_sodani Long Mansion (JOI17_long_mansion) C++14
10 / 100
 3000 ms 59420 KB 
//#pragma GCC optimize("Ofast,unroll-loops")
#include <bits/stdc++.h>
using namespace std;
typedef long long llo;
#define mp make_pair
#define pb push_back
#define a first 
#define b second
#define endl '\n'

int it[500001];
set<int> ss[500001];
int n;
pair<int,int> ans[500001];
vector<int> pre[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];
	}
	for(int i=0;i<n;i++){
		int x;
		cin>>x;
		for(int j=0;j<x;j++){
			int aa;
			cin>>aa;
			ss[aa].insert(i);
		}
	}
	set<int> xx;
	for(int i=1;i<n;i++){
		auto j=ss[it[i-1]].upper_bound(i-1);
		if(j==ss[it[i-1]].begin()){
			xx.insert(i);
			//cout<<i<<",,";
		}
		else{
			j--;
			pre[*j].pb(i);
		}
	}
	//cout<<endl;

	for(int i=0;i<n;i++){
		auto j=xx.upper_bound(i);
		if(j==xx.end()){
			ans[i]={i,n-1};
		}
		else{
			ans[i]={i,(*j)-1};
		}
		//cout<<ans[i].a<<":"<<ans[i].b<<endl;
		if(i>0){
			pair<int,int> cur=ans[i];
			while(cur.a>0){
				auto ac=ss[it[cur.a-1]].lower_bound(cur.a);
				if(ac==ss[it[cur.a-1]].end()){
					break;
				}
				/*if(i==3){
					cout<<(*ac)<<endl;
				}*/
				if((*ac)>cur.b){
					break;
				}

				pair<int,int> cur2=ans[cur.a-1];

				ans[i].a=min(ans[i].a,cur2.a);
				ans[i].b=max(ans[i].b,cur2.a);
		//		cout<<cur2.a<<"::"<<cur2.b<<endl;
			/*	if(cur2.b>=i){
					break;
				}*/
				int yy=ans[i].b;
				for(int ii=yy+1;ii<n;ii++){
					auto j=ss[it[ii-1]].lower_bound(ans[i].a);
					/*if(i==1){
						cout<<ii<<"<<<<<"<<endl;
					}*/
					if(j==ss[it[ii-1]].end()){
						break;
					}

					if((*j)<=ans[i].b){

						ans[i].b+=1;
						continue;
					}
					break;
				}
				cur=ans[i];
				continue;
			}
		}
		//cout<<ans[i].a<<","<<ans[i].b<<endl;
		for(auto j:pre[i]){
			xx.insert(j);
		}
	}
	int q;
	cin>>q;
	while(q--){
		int aa,bb;
		cin>>aa>>bb;
		aa--;
		bb--;
		if(bb>=ans[aa].a and bb<=ans[aa].b){
			cout<<"YES"<<endl;
		}
		else{
			cout<<"NO"<<endl;
		}
	}


 
	return 0;
}

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 29 ms 35948 KB Output is correct
2 Correct 43 ms 36076 KB Output is correct
3 Correct 85 ms 36332 KB Output is correct
4 Correct 31 ms 36076 KB Output is correct
5 Correct 33 ms 36076 KB Output is correct
6 Correct 31 ms 36080 KB Output is correct
7 Correct 28 ms 35948 KB Output is correct

Subtask #2
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 29 ms 35948 KB Output is correct
2 Correct 43 ms 36076 KB Output is correct
3 Correct 85 ms 36332 KB Output is correct
4 Correct 31 ms 36076 KB Output is correct
5 Correct 33 ms 36076 KB Output is correct
6 Correct 31 ms 36080 KB Output is correct
7 Correct 28 ms 35948 KB Output is correct
8 Correct 159 ms 41836 KB Output is correct
9 Correct 159 ms 41836 KB Output is correct
10 Correct 174 ms 42220 KB Output is correct
11 Correct 228 ms 42732 KB Output is correct
12 Correct 152 ms 41452 KB Output is correct
13 Correct 153 ms 42092 KB Output is correct
14 Correct 152 ms 42092 KB Output is correct
15 Correct 167 ms 42092 KB Output is correct
16 Correct 159 ms 41836 KB Output is correct
17 Correct 159 ms 42092 KB Output is correct
18 Correct 152 ms 42092 KB Output is correct
19 Correct 152 ms 42092 KB Output is correct
20 Correct 169 ms 42092 KB Output is correct
21 Correct 160 ms 41964 KB Output is correct
22 Correct 169 ms 41964 KB Output is correct
23 Correct 158 ms 41708 KB Output is correct
24 Correct 156 ms 41708 KB Output is correct
25 Correct 158 ms 41796 KB Output is correct
26 Correct 160 ms 41708 KB Output is correct

Subtask #3
0 / 15.0

# Verdict Execution time Memory Grader output
1 Execution timed out 3064 ms 59420 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #4
0 / 75.0

# Verdict Execution time Memory Grader output
1 Correct 29 ms 35948 KB Output is correct
2 Correct 43 ms 36076 KB Output is correct
3 Correct 85 ms 36332 KB Output is correct
4 Correct 31 ms 36076 KB Output is correct
5 Correct 33 ms 36076 KB Output is correct
6 Correct 31 ms 36080 KB Output is correct
7 Correct 28 ms 35948 KB Output is correct
8 Correct 159 ms 41836 KB Output is correct
9 Correct 159 ms 41836 KB Output is correct
10 Correct 174 ms 42220 KB Output is correct
11 Correct 228 ms 42732 KB Output is correct
12 Correct 152 ms 41452 KB Output is correct
13 Correct 153 ms 42092 KB Output is correct
14 Correct 152 ms 42092 KB Output is correct
15 Correct 167 ms 42092 KB Output is correct
16 Correct 159 ms 41836 KB Output is correct
17 Correct 159 ms 42092 KB Output is correct
18 Correct 152 ms 42092 KB Output is correct
19 Correct 152 ms 42092 KB Output is correct
20 Correct 169 ms 42092 KB Output is correct
21 Correct 160 ms 41964 KB Output is correct
22 Correct 169 ms 41964 KB Output is correct
23 Correct 158 ms 41708 KB Output is correct
24 Correct 156 ms 41708 KB Output is correct
25 Correct 158 ms 41796 KB Output is correct
26 Correct 160 ms 41708 KB Output is correct
27 Execution timed out 3064 ms 59420 KB Time limit exceeded
28 Halted 0 ms 0 KB -