This submission is migrated from previous version of oj.uz, which used different machine for grading. This submission may have different result if resubmitted.
#pragma GCC optimize("O3,unroll-loops")
#pragma GCC target("avx2,bmi,bmi2,lzcnt,popcnt")
#include <bits/stdc++.h>
using namespace std;
const int N = 500'000 + 10;
int n, m;
string str[N];
pair<string, string> Q[N];
int convert(const auto& a) { return a == 'A' ? 0 : a == 'C' ? 1 : a == 'G' ? 2 : 3; }
int nwt[N << 2][4];
int answer[N];
struct Trie {
int it;
vector<array<int, 4>> nwt;
vector<int> id;
void add(string s, int idx) {
int g = 0;
for (int i = 1; i <= (int)s.size(); ++i) {
while (nwt.size() <= g) nwt.push_back(array<int, 4>());
int path = convert(s[i - 1]);
if (!nwt[g][path]) nwt[g][path] = ++it;
g = nwt[g][path];
while (id.size() <= it) id.push_back(false);
}
id[g] = idx;
}
void get(string s) {
int ret = 0;
int g = 0;
for (int i = 1; i <= (int)s.size(); ++i) {
int path = convert(s[i - 1]);
if (nwt.size() <= g || !nwt[g][path]) return;
g = nwt[g][path];
answer[id[g]] += 1;
}
}
} T[N << 2];
int it;
void add(const auto& s, const auto& e, int idx) {
int g = 0;
for (int i = 1; i <= (int)s.size(); ++i) {
int path = convert(s[i - 1]);
if (!nwt[g][path]) nwt[g][path] = ++it;
g = nwt[g][path];
}
T[g].add(string(e.rbegin(), e.rend()), idx);
}
void get(const auto& s) {
string rs = string(s.rbegin(), s.rend());
int g = 0;
for (int i = 1; i <= (int)s.size(); ++i) {
int path = convert(s[i - 1]);
if (!nwt[g][path]) return;
g = nwt[g][path];
T[g].get(rs);
}
}
int32_t main() {
cin.tie(0)->sync_with_stdio(0);
cin >> n >> m;
for (int i = 1; i <= n; ++i) cin >> str[i];
for (int i = 1; i <= m; ++i) {
string s, e; cin >> s >> e;
Q[i] = {s, e};
}
vector<pair<string, string>> que(Q + 1, Q + m + 1);
sort(que.begin(), que.end());
que.resize(unique(que.begin(), que.end()) - que.begin());
{
int it = 0;
for (const auto& [s, e] : que) add(s, e, ++it);
for (int i = 1; i <= n; ++i) get(str[i]);
}
for (int i = 1; i <= m; ++i) {
int idx = lower_bound(que.begin(), que.end(), Q[i]) - que.begin() + 1;
cout << answer[idx] << "\n";
}
}
Compilation message (stderr)
selling_rna.cpp:12:19: warning: use of 'auto' in parameter declaration only available with '-fconcepts-ts'
12 | int convert(const auto& a) { return a == 'A' ? 0 : a == 'C' ? 1 : a == 'G' ? 2 : 3; }
| ^~~~
selling_rna.cpp: In member function 'void Trie::add(std::string, int)':
selling_rna.cpp:24:25: warning: comparison of integer expressions of different signedness: 'std::vector<std::array<int, 4> >::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
24 | while (nwt.size() <= g) nwt.push_back(array<int, 4>());
| ~~~~~~~~~~~^~~~
selling_rna.cpp:30:24: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
30 | while (id.size() <= it) id.push_back(false);
| ~~~~~~~~~~^~~~~
selling_rna.cpp: In member function 'void Trie::get(std::string)':
selling_rna.cpp:40:22: warning: comparison of integer expressions of different signedness: 'std::vector<std::array<int, 4> >::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
40 | if (nwt.size() <= g || !nwt[g][path]) return;
| ~~~~~~~~~~~^~~~
selling_rna.cpp:36:9: warning: unused variable 'ret' [-Wunused-variable]
36 | int ret = 0;
| ^~~
selling_rna.cpp: At global scope:
selling_rna.cpp:48:16: warning: use of 'auto' in parameter declaration only available with '-fconcepts-ts'
48 | void add(const auto& s, const auto& e, int idx) {
| ^~~~
selling_rna.cpp:48:31: warning: use of 'auto' in parameter declaration only available with '-fconcepts-ts'
48 | void add(const auto& s, const auto& e, int idx) {
| ^~~~
selling_rna.cpp:58:16: warning: use of 'auto' in parameter declaration only available with '-fconcepts-ts'
58 | void get(const auto& s) {
| ^~~~
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