How many numbers in [l,r] can be expressed to the sum of two composite numbers? A composite number can be divisible by at least one number besides itself and 1(In this problem, we consider number one is a composite number). These two composite numbers should be positive.

We have multiply cases. For each case:

The only one line contains two integers: l, r(1<= l < r <= 1e9)

For each case, output one integer, the number we need.

1 5

2

2=1+1, 5=1+4