/in/foo.cc: In function 'int main()':
/in/foo.cc:206:13: warning: unused variable 's' [-Wunused-variable]
     int i,j,s,p,q;
             ^
/in/foo.cc:206:15: warning: unused variable 'p' [-Wunused-variable]
     int i,j,s,p,q;
               ^