$!`$M $\%$ N $*$ U $+($R $-2^$M $*$ U$)/2*$ X $+(-$D$)`,$ :$1.****$: $`2^$M$`2.****$: $`2^$M $*$ U$``($R $-2^$M $*$ U$)/2`3.****$: $`($R $-2^$M $*$ U$)/2*$ X$`4.****$: :$```+/\backslash +-$D $/\backslash *//\backslash /\backslash \%$ U $*$ X $/\backslash /\backslash$ M N $2^$M U $/\backslash 2$ M$```-**`\%`**.-**`2^$M$`**.-**`2^$M $*$ U$`**$ U$.-**`$R $-2^$M $*$ U$`**.-**`($R $-2^$M $*$ U$)/2`**.-**`($R $-2^$M $*$ U$)/2*$ X$`**.-**`-$D$`**$ D$.$

I want adrawing of a tree