integer::N
  character(30),allocatable::A(:,:)
  character(30),parameter::nyanpass='nyanpass                      '
  character(30),parameter::skip='-                             '
  logical::renge
  integer::indx=0,i
  read *,N
  allocate(A(N,N))
  read *,A

  do i=1,N
     renge = ALL(A(i,:).eq.nyanpass.or.A(i,:).eq.skip)
     if(renge.eqv..true.) then
        if(indx.ne.0) then
           indx = 0
           exit
        else
           indx = i
        end if
     end if
  end do
  if (indx.ne.0) then
     print '(i0)',indx
  else
     print '(a)', "-1"
  end if
end program