module mdl
    integer*8::f(0:100,0:100)
contains

    subroutine build()
        do i=0,100
            do j=0,100
                f(i,j)=-1
            end do
        end do
    end subroutine

    recursive function calc(a,b,cur)result(res)
        integer*8::a,b,cur,res
        if(f(a,b)/=-1)then
            res=f(a,b)
            return
        end if
        if(cur==0)then
            f(a,b)=1
            res=1
            return
        end if
        res=calc(a+1,b,cur/3)+calc(a,b+1,cur/5)
        f(a,b)=res
    end function

end module


program main
    use mdl
    implicit none
    integer*8::i,j,k,l,x,y,n
    read*,n
    call build()
    print*,calc(0_8,0_8,n)
end program