Submission #585344

#	Time	Username	Problem	Language	Result	Execution time	Memory
585344		Ace	Selling RNA Strands (JOI16_selling_rna)	C++14	35 / 100	1584 ms	276532 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;

int getNum(char x){
	return x-'A';
}

pii getHash(string &s, int len){
	int ret = 0;
	for(int i=0;i<len;i++){
		ret *= MULT;
		ret += getNum(s[i]);
	}
	return make_pair(ret, len);
}

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<pii> isi;
set<int> dep, bel;
map<piipii, 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.insert(make_pair(pre[i].size(), 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){
			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){
			for(;prev<x;prev++){
				tmp *= MULT;
				tmp += getNum(tmps[prev]);
			}
			memoBel[i][x] = tmp;
		}
	}
	
	for(int i=1;i<=n;i++){
		for(auto cand: isi){
			piipii tmp = make_pair(make_pair(memoDep[i][cand.first], cand.first), make_pair(memoBel[i][cand.second], cand.second));
			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;
}

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