简单复习一下字符串，顺便存个板子。

// Problem: P3808 【模板】AC自动机（简单版）
// Contest: Luogu
// URL: https://www.luogu.com.cn/problem/P3808
// Memory Limit: 512 MB
// Time Limit: 1000 ms
// 
// Powered by CP Editor (https://cpeditor.org)//#pragma GCC optimize("Ofast,no-stack-protector,unroll-loops,fast-math")
//#pragma GCC target("sse,sse2,sse3,ssse3,sse4.1,sse4.2,avx,avx2,popcnt,tune=native")
//#pragma GCC optimize(2)
#include<cstdio>
#include<iostream>
#include<string>
#include<cstring>
#include<map>
#include<cmath>
#include<cctype>
#include<vector>
#include<set>
#include<queue>
#include<algorithm>
#include<sstream>
#include<ctime>
#include<cstdlib>
#include<random>
#include<cassert>
#define X first
#define Y second
#define L (u<<1)
#define R (u<<1|1)
#define pb push_back
#define mk make_pair
#define Mid ((tr[u].l+tr[u].r)>>1)
#define Len(u) (tr[u].r-tr[u].l+1)
#define random(a,b) ((a)+rand()%((b)-(a)+1))
#define db puts("---")
using namespace std;//void rd_cre() { freopen("d://dp//data.txt","w",stdout); srand(time(NULL)); }
//void rd_ac() { freopen("d://dp//data.txt","r",stdin); freopen("d://dp//AC.txt","w",stdout); }
//void rd_wa() { freopen("d://dp//data.txt","r",stdin); freopen("d://dp//WA.txt","w",stdout); }typedef long long LL;
typedef unsigned long long ULL;
typedef pair<int,int> PII;const int N=5000010,mod=1e9+7,INF=0x3f3f3f3f;
const double eps=1e-6;int n;
int tr[N][26],idx,cnt[N];
int fail[N];
char s[N];int newnode() {int u=++idx; cnt[u]=0;for(int i=0;i<26;i++) tr[u][i]=0;return u;
}void insert() {int n=strlen(s+1);int p=0;for(int i=1;i<=n;i++) {int u=s[i]-'a';if(!tr[p][u]) tr[p][u]=newnode();p=tr[p][u];}cnt[p]++;
}void getfail() {queue<int>q;for(int i=0;i<26;i++) if(tr[0][i]) {fail[tr[0][i]]=0;q.push(tr[0][i]);}while(q.size()) {int u=q.front(); q.pop();for(int i=0;i<26;i++) {int p=tr[u][i];if(p) fail[p]=tr[fail[u]][i],q.push(p);else tr[u][i]=tr[fail[u]][i];}}
}int query() {int ans=0;int n=strlen(s+1);int p=0;for(int i=1;i<=n;i++) {int u=tr[p][s[i]-'a'];while(u&&cnt[u]!=-1) {ans+=cnt[u]; cnt[u]=-1;u=fail[u];}p=tr[p][s[i]-'a'];}return ans;
}int main()
{
//	ios::sync_with_stdio(false);
//	cin.tie(0);idx=0; for(int i=0;i<26;i++) tr[0][i]=0;scanf("%d",&n);for(int i=1;i<=n;i++) {scanf("%s",s+1);insert();}getfail();scanf("%s",s+1);printf("%d\n",query());return 0;
}
/**/