note Roy Johnson Since you only use the parameter once, it's cheaper to just <strike>reference it as <c>$ARGV[0]</c></strike> <i>pop it inline</i> rather than assign it to anything. <c> @b=(0,1);push@b,$b[-2]+$b[-1]for 2..pop;print$b[-2] </c> You can save fourteen more strokes (and, irrelevantly, memory) by not using an array and using convoluted scalar assignment with a variable that is pre-initialized: <c> $b=1;$?=($b+=$?)-$?for 2..pop;print$? </c> <!-- Node text goes above. Div tags should contain sig only --> <div class="pmsig"><div class="pmsig-300037"> <hr> <small><b>Caution:</b> Contents may have been coded under pressure.</small> </div></div> 765916 766127