rr=Array.new(1003,0)
s=gets.chomp
t=gets.chomp
if t.size==1 then
	if s.match(t)==nil then
		puts 0
	else
		puts -1
	end
else
	n=s.size
	m=t.size
	as=[]
	0.upto(n-m){|p1|
		if s[p1,m]==t then
			as<<[p1,p1+m-2]
		end
	}
	ans=0
	while as.size>0 do
		ans2=ans+1
		pr=as[0][1]
		while as.size>0 && as[0][0]<=pr do
			as.shift
			ans=ans2
		end
	end
	puts ans
end