洛谷P3808

#include <bits/stdc++.h>
using namespace std;
const int maxn = 1e6 + 5;
int ch[maxn][30], fa[maxn], End[maxn];
int cnt = 0 , n;
int get_num(char c){return c - 'a';}
void build(string s){int cur = 0, len = s.length();for(int i = 0; i < len; i++){int c = get_num(s[i]);if(!ch[cur][c]) ch[cur][c] = ++cnt;cur = ch[cur][c];}End[cur]++;
}
void get_fail(){queue<int> q;for(int i = 0; i < 26; i++)if(ch[0][i])q.push(ch[0][i]);		while(!q.empty()){int u = q.front();	q.pop();for(int i = 0; i < 26; i++){int &v = ch[u][i];if(v){fa[v] =ch[fa[u]][i];q.push(v);}else v = ch[fa[u]][i];}		}
}
int query(string s){int cur = 0, ans = 0, len = s.length();for(int i = 0; i < len; i++){int c = get_num(s[i]);cur = ch[cur][c];for(int j = cur; j && End[j] != -1; j = fa[j]){ans += End[j];	End[j] = -1;}	}return ans;
}
int main() { string s;cin >> n;for(int i = 0; i < n; i++){cin >> s; build(s);}get_fail();		cin >> s;cout << query(s) << endl;	return 0;
}

洛谷P3796

#include <bits/stdc++.h>
using namespace std;
const int maxn = 1e6 + 5;
int ch[maxn][30], fa[maxn], End[maxn], ans[158], Maxs;
int cnt = 0 , n;
string str[158];
int get_num(char c){return c - 'a';}
void build(string s, int x){int cur = 0, len = s.length();for(int i = 0; i < len; i++){int c = get_num(s[i]);if(!ch[cur][c]) ch[cur][c] = ++cnt;cur = ch[cur][c];}End[cur] = x;
}
void get_fail(){queue<int> q;for(int i = 0; i < 26; i++)if(ch[0][i])q.push(ch[0][i]);		while(!q.empty()){int u = q.front();	q.pop();for(int i = 0; i < 26; i++){int &v = ch[u][i];if(v){fa[v] =ch[fa[u]][i];q.push(v);}else v = ch[fa[u]][i];}		}
}
void query(string s){int cur = 0, len = s.length();for(int i = 0; i < len; i++){int c = get_num(s[i]);cur = ch[cur][c];for(int j = cur; j; j = fa[j])if(End[j]){ans[End[j]]++; Maxs = max(Maxs, ans[End[j]]);}}	
}
int main() {string s; 	while(cin >> n && n){		for(int i = 0; i <= cnt; i++){			for(int j = 0; j < 26; j++)ch[i][j] = 0;fa[i] = 0; End[i] = 0;}memset(ans, 0, sizeof(ans));		Maxs = 0;cnt = 0;for(int i = 1; i <= n; i++){cin >> str[i]; build(str[i], i);}get_fail();		cin >> s;query(s);cout << Maxs << endl;	for(int i = 1; i <= n; i++)if(ans[i] == Maxs)cout << str[i] << endl;}	return 0;
}

luogu p5357

#include <bits/stdc++.h>
using namespace std;
const int maxn = 2e6 + 6, maxm = 2e5 + 6;
int ch[maxn][30], fa[maxn], End[maxn], ans[maxm], Map[maxn], In[maxn];
int cnt = 0 , n;
int pos[maxn];
int get_num(char c){return c - 'a';}
void build(string s, int x){int cur = 0, len = s.length();for(int i = 0; i < len; i++){int c = get_num(s[i]);if(!ch[cur][c]) ch[cur][c] = ++cnt;cur = ch[cur][c];}	
//	if(!End[cur])End[cur] = x;
//	Map[x] = End[cur];    pos[x] = cur;	//new
}
void get_fail(){queue<int> q;for(int i = 0; i < 26; i++)if(ch[0][i])q.push(ch[0][i]);		while(!q.empty()){int u = q.front();	q.pop();for(int i = 0; i < 26; i++){int &v = ch[u][i];if(v){fa[v] =ch[fa[u]][i];	In[ch[fa[u]][i]]++ ; //新加q.push(v);}else v = ch[fa[u]][i];}		}
}
void query(string s){int cur = 0, len = s.length();for(int i = 0; i < len; i++){int c = get_num(s[i]);cur = ch[cur][c];
//		for(int j = cur; j; j = fa[j])
//			if(End[j])ans[End[j]]++; ans[cur]++; 	//替換						}	
}
void topu(){queue<int> q;for(int i=1;i<=cnt;i++)if(In[i]==0)q.push(i);while(!q.empty()){int u=q.front();	q.pop();int v=fa[u];	In[v]--;ans[v] += ans[u];if(In[v]==0)q.push(v);}
}
int main() {string s; 	cin >> n;		for(int i = 1; i <= n; i++){cin >> s; build(s, i);}get_fail();		cin >> s;query(s);	topu();for(int i = 1; i <= n; i++)cout << ans[pos[i]] << endl;	return 0;
}