A point is considered maximal if there are no other points above it or to the right of it$.$ The

maximal points are to be connected by lines as shown in the above example. Initially the set of

points is to be read from a file whose name can be hard$-$coded. The following input file should

produce the above window:

$200\mathrm{.}0300\mathrm{.}0$

$250\mathrm{.}0300\mathrm{.}0$

$330\mathrm{.}0270\mathrm{.}0$

$150\mathrm{.}0380\mathrm{.}0$

$126\mathrm{.}0172\mathrm{.}0$

$397\mathrm{.}0379\mathrm{.}0$

$334\mathrm{.}0441\mathrm{.}0$

$53\mathrm{.}0288\mathrm{.}0$

$89\mathrm{.}0433\mathrm{.}0$

$182\mathrm{.}0215\mathrm{.}0$

$251\mathrm{.}0414\mathrm{.}0$