implicit none
integer(8) n,i,j
character a*3
integer(8),allocatable :: x(:,:)
integer(8),allocatable :: y(:)
read(*,*) n
allocate (x(1:n,4))
allocate (y(0:9))
y(0:9)=4
do i=1,n
   read(*,*) (x(i,j),j=1,4),a
   if (trim(a)=="YES") then
       y(x(i,1))=y(x(i,1))+1
       y(x(i,2))=y(x(i,2))+1
       y(x(i,3))=y(x(i,3))+1
       y(x(i,4))=y(x(i,4))+1
   else
       y(x(i,1))=y(x(i,1))-1
       y(x(i,2))=y(x(i,2))-1
       y(x(i,3))=y(x(i,3))-1
       y(x(i,4))=y(x(i,4))-1
   end if
end do

write(*,*) maxloc(y)-1
end