sub f{"@_"=~/\pL/?-55+ord$&:pop}
<>;
for(<>){
	($b)=sort{1}sort/./g;
	$b=1+f$b;
	$x=0;
	for(/./g){
		($x*=f$b)+=f$_
	}
	!$y|$x<$y and$y=$x
}
print$y