#include
#include?
#include?
using?namespace?std;
#define?MAX?50??
int?NONE[MAX]?=?{?0?};
string?strings;???????//產生式?
string?Vn;???????????//非終結符?
string?Vt;???????????//終結符??
string?first[MAX];??//存放每個終結符的first集?
string?First[MAX];??//存放每個非終結符的first集??
string?Follow[MAX];?//存放每個非終結符的follow集
int?N;???????????????//產生式個數???
struct?STR?
{
	string?left;?????
	string?right;?
};?????

void?rec（STR?*p）?????????????????//識別Vn和Vt??
{
	int?i?j;
	for?（i?=?0;i?	{
		for?（j?=?0;j?		{
			if?（（p[i].left[j]?>=?‘A‘&&p[i].left[j]?<=?‘Z‘））????????????????//左側第j個字母是大寫
			{
				if?（Vn.find（p[i].left[j]）>100）?????????????????????????????//Vn里沒找到返回很大的值