/in/foo.cc: In function 'int getNum(int*, int, int)':
/in/foo.cc:13:1: warning: no return statement in function returning non-void [-Wreturn-type]
 }
 ^
/in/foo.cc: In function 'bool find(int)':
/in/foo.cc:79:5: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
 if(j==s.size()-1&&s[i]=='0') return false;
    ~^~~~~~~~~~~~
/in/foo.cc:82:5: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
 if(j>=s.size()-1) return true;
    ~^~~~~~~~~~~~
/in/foo.cc:83:5: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
 if(n>=s.size()-1) {n=s.size()-1;if(!tailCheck(i,j,m,n)) return false;}
    ~^~~~~~~~~~~~
/in/foo.cc: In function 'bool Equal000(std::__cxx11::string)':
/in/foo.cc:163:14: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
 for(int i=0;i<s1.size();++i)
             ~^~~~~~~~~~
/in/foo.cc: In function 'int main()':
/in/foo.cc:190:14: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
 for(int l=1;l<=s1.size();++l)
             ~^~~~~~~~~~~