void printStr(const unordered_set<string> &test_set,const int flag){
if (flag==1) {
cout << "nterminal string is :" << endl;
}
else{
cout << "terminal string is :" << endl;
}
for (auto ptr = test_set.cbegin(); ptr!=test_set.cend(); ++ptr) {
cout << *ptr <<endl;
}
cout<<endl;
}
string check_ans(const string &s, unordered_set<string> &D) {
int len = 0;
for (auto iter = D.cbegin(); iter != D.cend(); ++iter) {
int i;
for (i = 0; i < s.size() && i < (*iter).size(); ++i) {
if (s[i] != (*iter)[i]) {
break;
}
}
if (i > len) {
len = i;
}
}
if (len == s.size()) {
return string();
} else {
return s.substr(0, len + 1);
}
}
void printProdcution(const string &str, const unordered_set<string> &test_prdtion){
for (auto ptr = test_prdtion.cbegin(); ptr!= test_prdtion.cend(); ++ptr) {
cout << str << "-->" <<*ptr<<endl;
}
cout<<endl;
}