結果
| 問題 | No.430 文字列検索 |
| コンテスト | |
| ユーザー |
okaduki
|
| 提出日時 | 2018-01-31 00:25:34 |
| 言語 | C++14 (gcc 13.3.0 + boost 1.89.0) |
| 結果 |
AC
|
| 実行時間 | 16 ms / 2,000 ms |
| コード長 | 3,098 bytes |
| 記録 | |
| コンパイル時間 | 2,087 ms |
| コンパイル使用メモリ | 179,108 KB |
| 実行使用メモリ | 10,240 KB |
| 最終ジャッジ日時 | 2024-11-10 00:18:38 |
| 合計ジャッジ時間 | 2,707 ms |
|
ジャッジサーバーID (参考情報) |
judge1 / judge2 |
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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;
using VI = vector<int>;
using VVI = vector<VI>;
using PII = pair<int, int>;
using LL = long long;
using VL = vector<LL>;
using VVL = vector<VL>;
using PLL = pair<LL, LL>;
using VS = vector<string>;
#define ALL(a) begin((a)),end((a))
#define RALL(a) (a).rbegin(), (a).rend()
#define PB push_back
#define EB emplace_back
#define MP make_pair
#define SZ(a) int((a).size())
#define SORT(c) sort(ALL((c)))
#define RSORT(c) sort(RALL((c)))
#define UNIQ(c) (c).erase(unique(ALL((c))), end((c)))
#define FOR(i,a,b) for(int i=(a);i<(b);++i)
#define REP(i,n) FOR(i,0,n)
#define FF first
#define SS second
#define DUMP(x) cout<<#x<<":"<<(x)<<endl
template<class S, class T>
istream& operator>>(istream& is, pair<S,T>& p){
return is >> p.FF >> p.SS;
}
template<class T>
istream& operator>>(istream& is, vector<T>& xs){
for(auto& x: xs)
is >> x;
return is;
}
template<class S, class T>
ostream& operator<<(ostream& os, const pair<S,T>& p){
return os << p.FF << " " << p.SS;
}
template<class T>
ostream& operator<<(ostream& os, const vector<T>& xs){
for(unsigned int i=0;i<xs.size();++i)
os << (i?" ":"") << xs[i];
return os;
}
template<class T>
void maxi(T& x, T y){
if(x < y) x = y;
}
template<class T>
void mini(T& x, T y){
if(x > y) x = y;
}
const double EPS = 1e-10;
const double PI = acos(-1.0);
const LL MOD = 1e9+7;
struct Aho{
// failure link is slways 0.
static const int FAIL = 0;
static const int SIZE = 26 + 1;
static int idx(char c){
return c-'A' + 1;
}
struct Node{
vector<Node*> chd;
vector<int> accept;
Node(){ chd.assign(SIZE, nullptr); }
//~Node(){ FOR(i,1,SIZE){ delete chd[i]; chd[i] = nullptr; } }
};
Node* root;
int kind;
Aho(){ root = nullptr; }
void build(const vector<string>& vs){
//delete root;
root = new Node();
kind = vs.size();
for(int i=0;i<kind;++i){
Node* crt = root;
for(char c: vs[i]){
int ix = idx(c);
if(!crt->chd[ix])
crt->chd[ix] = new Node();
crt = crt->chd[ix];
}
crt->accept.push_back(i);
}
queue<Node*> q;
for(int i=1;i<SIZE;++i)
if(root->chd[i]){
root->chd[i]->chd[FAIL] = root;
q.push(root->chd[i]);
}
else
root->chd[i] = root;
while(!q.empty()){
Node* t = q.front();
q.pop();
for(int i=1;i<SIZE;++i)
if(t->chd[i]){
q.push(t->chd[i]);
Node* p = t->chd[FAIL];
while(!p->chd[i]) p = p->chd[FAIL];
t->chd[i]->chd[FAIL] = p->chd[i];
t->chd[i]->accept.insert(t->chd[i]->accept.end(), p->chd[i]->accept.begin(), p->chd[i]->accept.end());
}
}
}
/**
* require: |res| == kind
*/
void match(const string& s, vector<int>& res){
Node* crt = root;
for(char c: s){
int ix = idx(c);
while(!crt->chd[ix]) crt = crt->chd[FAIL];
crt = crt->chd[ix];
for(int id: crt->accept)
++res[id];
}
}
};
int main(){
cin.tie(0);
ios_base::sync_with_stdio(false);
string S;
cin >> S;
int M;
cin >> M;
VS vs(M);
REP(i,M) cin >> vs[i];
Aho aho;
aho.build(vs);
VI res(M);
aho.match(S, res);
cout << accumulate(ALL(res), 0) << endl;
return 0;
}
okaduki