program main
    implicit none
    integer:: bw=0,han=1,i,j
    character pl*6,ban*8
    read(*,*)pl
    if(pl(1:1)=="o")han=han*(-1)
    do i=1,8
        read(*,*)ban
        do j=1,8
            if(ban(j:j)/=".")bw=bw+1
        enddo
    enddo
    if(mod(bw,2)==0)han=han*(-1)
    if(han/=1)then
        write(*,"(a6)")"yukiko"
    else
        write(*,"(a3)")"oda"
    endif
end program main