#include <string.h>
#include <stdio.h>
#include <stdlib.h>
int main()
{
char p[30][30]; //存放文法
char q[30][30];
int line = 0;
int n;
int i, j;
int count =0;
int k,t = 0;
int flag = 0;
int l,m = 0;
char VN[30] = {'