oj.uz

Submission #87416

# Submission time Handle Problem Language Result Execution time Memory
87416 2018-11-30T18:48:10 Z KLPP Selling RNA Strands (JOI16_selling_rna) C++14
100 / 100
 1280 ms 599376 KB 
#include<iostream>
#include<vector>
#include<algorithm>
#include<stdio.h>
using namespace std;
#define MOD 1000000007
#define BASE 257
typedef long long int lld;
typedef pair<int,int> pii;
class FT{
	int FT[2000000];
	int N;
	public:
	void init(int n){
		N=n;
		for(int i=0;i<=N;i++)FT[i]=0;
	}
	void upd(int pos){
		for(int i=pos;i<=N;i+=i&(-i)){
			FT[i]++;
		}
	}
	int query(int pos){
		int ans=0;
		for(int i=pos;i>0;i-=i&(-i)){
			ans+=FT[i];
		}return ans;
	}
};
struct Trie{
	struct Trie *child[26];
	vector<int> end;
};
void insert(Trie *T,string s, int index){
	Trie *S=T;
	for(int i=0;i<s.length();i++){
		int u=s[i]-'A';
		if(!S->child[u]){
			S->child[u]=new Trie();
			for(int j=0;j<26;j++)S->child[u]->child[j]=NULL;
		}
		S=S->child[u];
	}
	S->end.push_back(index);
}
pair<int,int> Query1[1000000];
vector<int> EulerTour1;
pair<int,int> Query2[1000000];
vector<int> EulerTour2;
void DFS1(Trie *T){
	sort(T->end.begin(),T->end.end());
	for(int i=0;i<T->end.size();i++){
		if(T->end[i]<=0){
			Query1[-T->end[i]].first=EulerTour1.size();
		}else EulerTour1.push_back(T->end[i]-1);
		//cout<<T->end[i]<<" ";
	}
	//cout<<endl;
	for(int i=0;i<26;i++){
		if(T->child[i]){
			DFS1(T->child[i]);
		}
	}
	for(int i=0;i<T->end.size();i++){
		if(T->end[i]<=0){
			Query1[-T->end[i]].second=EulerTour1.size();
		}
		//cout<<T->end[i]<<" ";
	}
}
void DFS2(Trie *T){
	sort(T->end.begin(),T->end.end());
	for(int i=0;i<T->end.size();i++){
		if(T->end[i]<=0){
			Query2[-T->end[i]].first=EulerTour2.size();
		}else EulerTour2.push_back(T->end[i]-1);
		//cout<<T->end[i]<<" ";
	}
	//cout<<endl;
	for(int i=0;i<26;i++){
		if(T->child[i]){
			DFS2(T->child[i]);
		}
	}
	for(int i=0;i<T->end.size();i++){
		if(T->end[i]<=0){
			Query2[-T->end[i]].second=EulerTour2.size();
		}
		//cout<<T->end[i]<<" ";
	}
}
int main(){
	int n,m;
	cin>>n>>m;
	string arr[n];
	Trie *T=new Trie();
	for(int i=0;i<n;i++){
		cin>>arr[i];
		insert(T,arr[i],i+1);
	}
	string Queries1[m];
	string Queries2[m];
	for(int i=0;i<m;i++){
		cin>>Queries1[i]>>Queries2[i];
		insert(T,Queries1[i],-i);
	}
	DFS1(T);
	/*for(int i=0;i<n;i++){
		cout<<EulerTour1[i]<<endl;
	}
	for(int i=0;i<m;i++){
		cout<<Query1[i].first<<" "<<Query1[i].second<<endl;
	}*/
	T=new Trie();
	for(int i=0;i<n;i++){
		reverse(arr[i].begin(),arr[i].end());
		insert(T,arr[i],i+1);
	}
	for(int i=0;i<m;i++){
		reverse(Queries2[i].begin(),Queries2[i].end());
		insert(T,Queries2[i],-i);
	}
	DFS2(T);
	/*for(int i=0;i<m;i++){
		cout<<Query2[i].first<<" "<<Query2[i].second<<endl;
	}*/
	pair<int,int> ET[n];
	for(int i=0;i<n;i++){
		ET[EulerTour1[i]].first=i;
		ET[EulerTour2[i]].second=i;
	}sort(ET,ET+n);
	int answer[4*m];
	vector<pair<pii,int> >Queries;
	for(int i=0;i<m;i++){
		Queries.push_back(pair<pii,int>(pii(Query1[i].first,Query2[i].first),4*i));
		Queries.push_back(pair<pii,int>(pii(Query1[i].first,Query2[i].second),4*i+1));
		Queries.push_back(pair<pii,int>(pii(Query1[i].second,Query2[i].first),4*i+2));
		Queries.push_back(pair<pii,int>(pii(Query1[i].second,Query2[i].second),4*i+3));
	}
	sort(Queries.begin(),Queries.end());
	int pnt=0;
	FT *F=new FT();
	F->init(n);
	for(int i=0;i<4*m;i++){
		while(pnt<Queries[i].first.first){
			pnt++;
			F->upd(ET[pnt-1].second+1);
		}
		answer[Queries[i].second]=F->query(Queries[i].first.second);
	}
	for(int i=0;i<m;i++){
		cout<<answer[4*i]+answer[4*i+3]-answer[4*i+1]-answer[4*i+2]<<endl;
	}
	
	//cout<<'G'-'A'<<endl;
	
	
	return 0;
}

Compilation message

selling_rna.cpp: In function 'void insert(Trie*, std::__cxx11::string, int)':
selling_rna.cpp:36:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(int i=0;i<s.length();i++){
              ~^~~~~~~~~~~
selling_rna.cpp: In function 'void DFS1(Trie*)':
selling_rna.cpp:52:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(int i=0;i<T->end.size();i++){
              ~^~~~~~~~~~~~~~
selling_rna.cpp:64:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(int i=0;i<T->end.size();i++){
              ~^~~~~~~~~~~~~~
selling_rna.cpp: In function 'void DFS2(Trie*)':
selling_rna.cpp:73:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(int i=0;i<T->end.size();i++){
              ~^~~~~~~~~~~~~~
selling_rna.cpp:85:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(int i=0;i<T->end.size();i++){
              ~^~~~~~~~~~~~~~

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 12 ms 8312 KB Output is correct
2 Correct 10 ms 8408 KB Output is correct
3 Correct 10 ms 8408 KB Output is correct
4 Correct 9 ms 8408 KB Output is correct
5 Correct 10 ms 8612 KB Output is correct
6 Correct 9 ms 8612 KB Output is correct
7 Correct 9 ms 8612 KB Output is correct

Subtask #2
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 935 ms 477976 KB Output is correct
2 Correct 922 ms 477976 KB Output is correct
3 Correct 907 ms 477976 KB Output is correct
4 Correct 926 ms 477976 KB Output is correct
5 Correct 1280 ms 590276 KB Output is correct
6 Correct 1189 ms 599376 KB Output is correct
7 Correct 300 ms 599376 KB Output is correct
8 Correct 1084 ms 599376 KB Output is correct
9 Correct 909 ms 599376 KB Output is correct
10 Correct 637 ms 599376 KB Output is correct

Subtask #3
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 175 ms 599376 KB Output is correct
2 Correct 116 ms 599376 KB Output is correct
3 Correct 159 ms 599376 KB Output is correct
4 Correct 135 ms 599376 KB Output is correct
5 Correct 135 ms 599376 KB Output is correct
6 Correct 156 ms 599376 KB Output is correct

Subtask #4
40.0 / 40.0

# Verdict Execution time Memory Grader output
1 Correct 12 ms 8312 KB Output is correct
2 Correct 10 ms 8408 KB Output is correct
3 Correct 10 ms 8408 KB Output is correct
4 Correct 9 ms 8408 KB Output is correct
5 Correct 10 ms 8612 KB Output is correct
6 Correct 9 ms 8612 KB Output is correct
7 Correct 9 ms 8612 KB Output is correct
8 Correct 935 ms 477976 KB Output is correct
9 Correct 922 ms 477976 KB Output is correct
10 Correct 907 ms 477976 KB Output is correct
11 Correct 926 ms 477976 KB Output is correct
12 Correct 1280 ms 590276 KB Output is correct
13 Correct 1189 ms 599376 KB Output is correct
14 Correct 300 ms 599376 KB Output is correct
15 Correct 1084 ms 599376 KB Output is correct
16 Correct 909 ms 599376 KB Output is correct
17 Correct 637 ms 599376 KB Output is correct
18 Correct 175 ms 599376 KB Output is correct
19 Correct 116 ms 599376 KB Output is correct
20 Correct 159 ms 599376 KB Output is correct
21 Correct 135 ms 599376 KB Output is correct
22 Correct 135 ms 599376 KB Output is correct
23 Correct 156 ms 599376 KB Output is correct
24 Correct 936 ms 599376 KB Output is correct
25 Correct 1016 ms 599376 KB Output is correct
26 Correct 835 ms 599376 KB Output is correct
27 Correct 818 ms 599376 KB Output is correct
28 Correct 779 ms 599376 KB Output is correct
29 Correct 460 ms 599376 KB Output is correct