SP10790 GONE - G-One Numbers

Description

The War of Evil vs Good continues and Ra-One and G-One continue to be on respective sides. After saving all the cities with [Ra-One Numbers](https://www.spoj.com/problems/RAONE/) G-One realised that some cities whose population is a "G-One Number" can be easy target for Ra-One. A G-One number is a number sum of whose digits is a prime number For eg. 12 .. sum = 1+2 =3 ... 3 is a prime number. G-One wants to find out all the populations which can be g-One numbers.... Can You help Him.? You will be given the range of population and you have to tell him how many in this range are G-One Numbers.

Input Format

first line has number 'c' indicating the number of ranges. 'c' lines follow and contain two numbers ..... 'f' and 't' inclusive.

Output Format

Print a single line per case giving the number of populations which are G-One numbers.