/in/foo.cc: In function 'int main()':
/in/foo.cc:15:21: warning: '*' in boolean context, suggest '&&' instead [-Wint-in-bool-context]
   15 |         cout<<N*G&&M*G;
      |                    ~^~
/in/foo.cc:5:17: warning: unused variable 'F' [-Wunused-variable]
    5 | int V,G,M,N,Y=0,F=0;
      |                 ^