Accept n $($int$)$ as command$-$line argument

Create an empty list x

For each i in $[0,$ n$)$

$-$ Append to x a float read from standard input $($use stdio.readFloat$())$

Create a list y of floats similar to x

Set distance to $0\mathrm{.}0$

For each i in $[0,$ n$)$

$-$ Increment distance by $($x$[$i$]$ y $[$i$])2$

Write $$distance