Wrong Answer
/in/foo.cc: In member function 'void Aho_Corasick_Automaton::ins(char*, int)':
/in/foo.cc:21:26: warning: suggest parentheses around '-' inside '<<' [-Wparentheses]
state[now]=1<<num-1;
~~~^~
/in/foo.cc: In member function 'void Aho_Corasick_Automaton::ins(char*, int)':
/in/foo.cc:21:26: warning: suggest parentheses around '-' inside '<<' [-Wparentheses]
state[now]=1<<num-1;
~~~^~
