/in/foo.cc: In function 'int main()':
/in/foo.cc:22:19: warning: 'nmax' may be used uninitialized in this function [-Wmaybe-uninitialized]
  cout<<dmax<<" "<<nmax<<endl;
                   ^~~~
/in/foo.cc:16:17: warning: 'dmax' may be used uninitialized in this function [-Wmaybe-uninitialized]
   if(d[i]>d[dmax])
           ~~~~~~^