#include <bits/stdc++.h>
using namespace std;
#define LOCAL
#ifdef LOCAL
#include "debug2.h"
#else
#define debug(...) 42
#endif
template<typename T> bool ckmin(T& x, const T& y) { return x > y ? x = y, 1 : 0; }
template<typename T> bool ckmax(T& x, const T& y) { return x < y ? x = y, 1 : 0; }
#define REP(i, n) for(int i = 0, ____n = (n); i < ____n; ++i)
#define REPD(i, n) for(int i = (n) - 1; i >= 0; --i)
#define __builtin_popcount __builtin_popcountll
#define left _______left
#define right _______right
#define MASK(x) (1LL << (x))
#define BIT(mask, x) (((mask) >> (x)) & 1)
#define SZ(x) (int) ((x).size())
#define ALL(x) (x).begin(), (x).end()
#define SQR(x) (1LL * (x) * (x))
#define BETWEEN(l, x, r) ((l) <= (x) && (x) <= (r))
const int dx[] = {-1, 1, 0, 0, -1, -1, 1, 1};
const int dy[] = {0, 0, -1, 1, -1, 1, -1, 1};
const int INF = (int) 1e9 + 7;
const long long LINF = (long long) 1e18 + 7;
const int MX = (int) 1e5 + 5;
const int BLOCK = 320;
struct node {
node *nxt[30];
vector<int> ids;
node(void) {
ids.clear();
REP(i, 26) nxt[i] = NULL;
}
};
node *root[2];
void addString(bool prefix, const string& s, int id) {
node *cur = root[prefix];
for (char ch : s) {
int p = ch - 'A';
if (cur->nxt[p] == NULL) cur->nxt[p] = new node();
cur = cur->nxt[p];
cur->ids.push_back(id);
}
}
vector<int> getString(bool prefix, const string& s) {
node *cur = root[prefix];
for (char ch : s) {
int p = ch - 'A';
if (cur->nxt[p] == NULL) return vector<int>();
cur = cur->nxt[p];
}
return cur->ids;
}
int n, q;
string S[MX];
signed main(void) {
ios::sync_with_stdio(false);
cin.tie(0);
cin >> n >> q;
REP(i, 2) root[i] = new node();
REP(i, n) cin >> S[i];
sort(S, S + n);
REP(i, n) {
addString(true, S[i], i);
reverse(ALL(S[i]));
addString(false, S[i], i);
}
while (q--) {
string pref, suf; cin >> pref >> suf;
reverse(ALL(suf));
vector<int> vec_prefix = getString(true, pref);
vector<int> vec_suffix = getString(false, suf);
if (vec_prefix.empty() || vec_suffix.empty()) {
cout << "0\n";
continue;
}
int left = (int) (lower_bound(ALL(vec_suffix), vec_prefix[0]) - vec_suffix.begin());
int right = (int) (upper_bound(ALL(vec_suffix), vec_prefix.back()) - vec_suffix.begin());
cout << right - left << '\n';
}
return 0;
}
Compilation message
selling_rna.cpp:7:10: fatal error: debug2.h: No such file or directory
7 | #include "debug2.h"
| ^~~~~~~~~~
compilation terminated.
