starting=1
bse=gets.to_i
while gets
	n=$_.to_i(bse)
	n+=starting-2
	digits=1
	expbase=1
	while (x=expbase*(digits*(bse-1)))<=n
		n-=x
		digits+=1
		expbase*=bse
	end
	num=expbase+n/digits
	#d=digits-1-n%digits
	#d.times{num/=bse}
	#puts num%bse
	puts num.to_s(bse)[-(digits-1-n%digits)-1]
end