/in/foo.cc: In function 'long long int ISAP(std::__cxx11::string)':
/in/foo.cc:35:18: error: expected ',' or ';' before ')' token
   int t=Gt(S,inf)),maxflow=0;
                  ^
/in/foo.cc:37:15: error: 'maxflow' was not declared in this scope
   while(t>=0) maxflow+=t;
               ^~~~~~~
/in/foo.cc:38:10: error: 'maxflow' was not declared in this scope
   return maxflow;
          ^~~~~~~