Solve the programming task below in a Python markdown code block.
Watson likes to challenge Sherlock's math ability.  He will provide a starting and ending value that describe a range of integers, inclusive of the endpoints.  Sherlock must determine the number of square integers within that range.

Note: A square integer is an integer which is the square of an integer, e.g. $1,4,9,16,25$. 

Example 

$a=24$ 

$b=49$  

There are three square integers in the range: $25,36$ and $49$.  Return $3$.   

Function Description

Complete the squares function in the editor below.  It should return an integer representing the number of square integers in the inclusive range from $a$ to $b$.  

squares has the following parameter(s):  

int a: the lower range boundary
int b: the upper range boundary  

Returns  

int: the number of square integers in the range

Input Format

The first line contains $q$, the number of test cases. 

Each of the next $q$ lines contains two space-separated integers, $a$ and $b$, the starting and ending integers in the ranges.     

Constraints

$1\leq q\leq100$ 

$1\leq a\leq b\leq10^9$  

Sample Input
2
3 9
17 24

Sample Output
2
0

Explanation

Test Case #00: In range $[3,9]$, $4$ and $9$ are the two square integers. 

Test Case #01: In range $[17,24]$, there are no square integers.