/in/foo.cc: In function 'int main()':
/in/foo.cc:24:13: warning: unused variable 's' [-Wunused-variable]
     int i,j,s,p,q,ip,x,y,deep=0;
             ^
/in/foo.cc:24:15: warning: unused variable 'p' [-Wunused-variable]
     int i,j,s,p,q,ip,x,y,deep=0;
               ^
/in/foo.cc:24:17: warning: unused variable 'q' [-Wunused-variable]
     int i,j,s,p,q,ip,x,y,deep=0;
                 ^