結果
| 問題 |
No.430 文字列検索
|
| コンテスト | |
| ユーザー |
kyort0n
|
| 提出日時 | 2019-03-14 15:17:05 |
| 言語 | C++11(廃止可能性あり) (gcc 13.3.0) |
| 結果 |
AC
|
| 実行時間 | 238 ms / 2,000 ms |
| コード長 | 3,037 bytes |
| コンパイル時間 | 1,323 ms |
| コンパイル使用メモリ | 172,932 KB |
| 実行使用メモリ | 27,628 KB |
| 最終ジャッジ日時 | 2024-11-10 00:22:55 |
| 合計ジャッジ時間 | 2,727 ms |
|
ジャッジサーバーID (参考情報) |
judge3 / judge4 |
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| ファイルパターン | 結果 |
|---|---|
| sample | AC * 4 |
| other | AC * 14 |
ソースコード
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef pair<ll, ll> l_l;
#define EPS (1e-7)
#define INF (1e9)
#define PI (acos(-1))
//const ll mod = 1000000007;
template<class Z> Z rng(Z a, Z b) {
static mt19937 mt(chrono::steady_clock::now().time_since_epoch().count());
return uniform_int_distribution<Z>(a, b - 1)(mt);
}
struct RollingHash {
static constexpr uint64_t P0 = 4e9 + 7;
static constexpr uint64_t P1 = 4e9 + 9;
static uint64_t B0;
static uint64_t B1;
static vector<uint64_t> powB0;
static vector<uint64_t> powB1;
const int n;
vector<uint64_t> h0;
vector<uint64_t> h1;
template<class Itr> RollingHash(Itr first, Itr last) : n(distance(first, last)), h0(n + 1), h1(n + 1) {
for (int i = 0; i < n; ++i, ++first) {
h0[i + 1] = (h0[i] * B0 + *first) % P0;
h1[i + 1] = (h1[i] * B1 + *first) % P1;
}
while (powB0.size() <= n) {
powB0.push_back(powB0.back() * B0 % P0);
powB1.push_back(powB1.back() * B1 % P1);
}
}
uint64_t get0(int l, int r) { return (h0[r] + (P0 - h0[l]) * powB0[r - l]) % P0; }
uint64_t get1(int l, int r) { return (h1[r] + (P1 - h1[l]) * powB1[r - l]) % P1; }
bool eq(int l0, int r0, int l1, int r1) {
return get0(l0, r0) == get0(l1, r1) and get1(l0, r0) == get1(l1, r1);
}
template<class Itr> static uint64_t get0(Itr first, Itr last) {
uint64_t res = 0;
while (first != last) {
res = (res * B0 + *first++) % P0;
}
return res;
}
template<class Itr> static uint64_t get1(Itr first, Itr last) {
uint64_t res = 0;
while (first != last) {
res = (res * B1 + *first++) % P1;
}
return res;
}
};
uint64_t RollingHash::B0 = rng<unsigned>(1, RollingHash::P0);
uint64_t RollingHash::B1 = rng<unsigned>(1, RollingHash::P1);
vector<uint64_t> RollingHash::powB0{1};
vector<uint64_t> RollingHash::powB1{1};
map<pair<uint64_t, uint64_t>, ll> mp;
int main() {
//cout.precision(10);
cin.tie(0);
ios::sync_with_stdio(false);
ll M;
string S;
cin >> S >> M;
ll ans = 0;
RollingHash rhs(S.begin(), S.end());
for(int i = 0; i < S.size(); i++) {
for(int j = 1; j <= 10; j++) {
//cerr << i << " " << j << endl;
if(i + j > S.size()) break;
mp[{rhs.get0(i, i + j), rhs.get1(i, i + j)}]++;
}
}
string C;
while(M--) {
cin >> C;
uint64_t zero = RollingHash::get0(C.begin(), C.end());
uint64_t one = RollingHash::get1(C.begin(), C.end());
if(mp.count({zero, one}) == 0) continue;
ans += mp[{zero, one}];
/*
for(int i = 0; i + C.size() <= S.size(); i++) {
//if(rhs.get0(i, i+C.size()) != RollingHash::get0(C.begin(), C.end())) continue;
//if(rhs.get1(i, i+C.size()) != RollingHash::get1(C.begin(), C.end())) continue;
if(rhs.get0(i, i+C.size()) != zero) continue;
//if(rhs.get1(i, i+C.size()) != one) continue;
ans++;
}
*/
}
cout << ans << endl;
return 0;
}
kyort0n