print((function (f, a1, a2, a3)
	if f(a1,a2,a3) then return "INF" end
	if a1==a2 or a2==a3 or a3==a1 then return 0 end
	local r=0
	for i=2,(a1>a3 and a1 or a3) do if f(a1%i,a2%i,a3%i) then r=r+1 end end
	return r
end)(function (a, b, c)
	return (b>a and b>c and a~=c) or (b<a and b<c and a~=c)
end, io.stdin:read("*n"), io.stdin:read("*n"), io.stdin:read("*n")))