Submission #585957

#	Time	Username	Problem	Language	Result	Execution time	Memory
585957		Ace	Selling RNA Strands (JOI16_selling_rna)	C++14	35 / 100	1589 ms	143700 KiB

selling_rna

#include<bits/stdc++.h>
using namespace std;
 
typedef pair<int,int> pii;
typedef pair<pii,pii> piipii;
const int N = 1e5;
const int MULT = 23;
 
inline int getNum(char x){
	return x-'A'+1;
}
 
inline int getHash(string &s, int len){
	int ret = 0;
	for(int i=0;i<len;i++){
		ret *= MULT;
		ret += getNum(s[i]);
	}
	return ret;
}
 
map<int,int> memoDep[N+5];
map<int,int> memoBel[N+5];
string li[N+5];
 
int n,m;
 
string pre[N+5], suf[N+5];
set<int> isi[N+5];
set<int> dep, bel;
map<pii, int> cnt;
 
int main(){
	ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
	cin >> n >> m;
	for(int i=1;i<=n;i++){
		cin >> li[i];
	}
	for(int i=1;i<=m;i++){
		cin >> pre[i] >> suf[i];
		reverse(suf[i].begin(), suf[i].end());
		isi[pre[i].size()].insert(suf[i].size());
		dep.insert(pre[i].size());
		bel.insert(suf[i].size());
		cnt[make_pair(getHash(pre[i], pre[i].size()), getHash(suf[i], suf[i].size()))] = 0;
	}
	
	for(int i=1;i<=n;i++){
		int tmp = 0;
		int prev = 0;
		for(auto x: dep){
			if(x > li[i].size()) break;
			for(;prev<x;prev++){
				tmp *= MULT;
				tmp += getNum(li[i][prev]);
			}
			memoDep[i][x] = tmp;
		}
	}
	
	for(int i=1;i<=n;i++){
		int tmp = 0;
		int prev = 0;
		string tmps = li[i];
		reverse(tmps.begin(), tmps.end());
		for(auto x: bel){
			if(x > li[i].size()) break;
			for(;prev<x;prev++){
				tmp *= MULT;
				tmp += getNum(tmps[prev]);
			}
			memoBel[i][x] = tmp;
		}
	}
	
	for(int i=1;i<=n;i++){
		for(auto cand : dep){
			if(cand > li[i].size()) break;
			for(auto cand2: isi[cand]){
				if(cand2 > li[i].size()) break;
				pii tmp = make_pair(memoDep[i][cand], memoBel[i][cand2]);
				if(cnt.find(tmp) != cnt.end()) cnt[tmp]++;
			}
		}
	}
	
	for(int i=1;i<=m;i++){
		cout << cnt[make_pair(getHash(pre[i], pre[i].size()), getHash(suf[i], suf[i].size()))] << endl;
	}
	
	return 0;
}

Compilation message (stderr)

selling_rna.cpp: In function 'int main()':
selling_rna.cpp:52:9: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   52 |    if(x > li[i].size()) break;
      |       ~~^~~~~~~~~~~~~~
selling_rna.cpp:67:9: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   67 |    if(x > li[i].size()) break;
      |       ~~^~~~~~~~~~~~~~
selling_rna.cpp:78:12: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   78 |    if(cand > li[i].size()) break;
      |       ~~~~~^~~~~~~~~~~~~~
selling_rna.cpp:80:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   80 |     if(cand2 > li[i].size()) break;
      |        ~~~~~~^~~~~~~~~~~~~~

• Subtask 1: 10 / 10
• Subtask 2: 0 / 25
• Subtask 3: 25 / 25
• Subtask 4: 0 / 40