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  • SP8093 JZPGYZ

    /*
    打模板题啊
    每个串影响到的集合直接枚举跳parent处理即可 
    
    */
    #include<cstdio>
    #include<algorithm>
    #include<cstring>
    #include<queue>
    #include<iostream>
    #define ll long long 
    #define M 400010
    #define mmp make_pair
    using namespace std;
    int read()
    {
    	int x;
    	cin >> x;
    	return x;
    }
    int ch[M][26], fa[M], len[M], cnt = 1, lst, n, m;
    string a[M], b; 
    
    void insert(int c)
    {
    	int p = ++cnt, f = lst;
    	lst = p;
    	len[p] = len[f] + 1;
    	while(f && !ch[f][c]) ch[f][c] = p, f = fa[f];
    	if(!f)
    	{
    		fa[p] = 1;
    	}
    	else
    	{
    		int q = ch[f][c];
    		if(len[q] == len[f] + 1)
    		{
    			fa[p] = q;
    		}
    		else
    		{
    			int nq = ++cnt;
    			fa[nq] = fa[q];
    			memcpy(ch[nq], ch[q], sizeof(ch[q]));
    			len[nq] = len[f] + 1;
    			fa[q] = fa[p] = nq;
    			while(f && ch[f][c] == q) ch[f][c] = nq, f = fa[f];
    		}
    	}
    }
    int cor[M], ans[M];
    int main()
    {
    	ios::sync_with_stdio(false);	
    	n = read(), m = read();
    	for(int i = 1; i <= n; i++)
    	{
    		cin >> a[i];
    		lst = 1;
    		for(int j = 0; j < a[i].size(); j++) insert(a[i][j] - 'a');
    	}
    	for(int i = 1; i <= n; i++)
    	{
    		int now = 1;
    		for(int j = 0; j < a[i].size(); j++)
    		{
    			now = ch[now][a[i][j] - 'a'];
    			int tmp = now;
    			while(tmp && cor[tmp] != i) cor[tmp] = i, ans[tmp]++, tmp = fa[tmp]; 
    		}
    	}
    	while(m--)
    	{
    		cin >> b;
    		int now = 1, as = 0;
    		for(int i = 0; i < b.size(); i++)
    		{
    			now = ch[now][b[i] - 'a'];
    			if(!now) break;
    		}
    		as = ans[now];
    		cout << as << "
    ";
    	}
    	return 0;
    }
    
    
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  • 原文地址:https://www.cnblogs.com/luoyibujue/p/10668838.html
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