Solve the programming task below in a Python markdown code block.
When a contiguous block of text is selected in a PDF viewer, the selection is highlighted with a blue rectangle. In this PDF viewer, each word is highlighted independently. For example: 

There is a list of $26$ character heights aligned by index to their letters.  For example, 'a' is at index $0$ and 'z' is at index $25$.  There will also be a string.  Using the letter heights given, determine the area of the rectangle highlight in $\textit{mm}^2$ assuming all letters are $1mm$ wide.  

Example 

$h=[1,3,1,3,1,4,1,3,2,5,5,5,1,1,1,5,5,1,5,2,5,5,5,5,5,5]$
$word='\ \textit{torn}'$

The heights are $t=2,o=1,r=1$ and $n=1$.  The tallest letter is $2$ high and there are $4$ letters.  The hightlighted area will be $2*4=8mm^{2}$ so the answer is $8$.  

Function Description  

Complete the designerPdfViewer function in the editor below.  

designerPdfViewer has the following parameter(s):

int h[26]: the heights of each letter  
string word: a string  

Returns  

int: the size of the highlighted area  

Input Format

The first line contains $26$ space-separated integers describing the respective heights of each consecutive lowercase English letter, ascii[a-z]. 

The second line contains a single word consisting of lowercase English alphabetic letters.

Constraints

$1\leq h[?]\leq7$, where $\mbox{?}$ is an English lowercase letter.
$word$ contains no more than $10$ letters.   

Sample Input 0
1 3 1 3 1 4 1 3 2 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5
abc

Sample Output 0
9

Explanation 0

We are highlighting the word abc:

Letter heights are $\boldsymbol{a}=1$, $b=3$ and $\boldsymbol{c=1}$. The tallest letter, b, is $3mm$ high. The selection area for this word is $3\cdot1mm\cdot3mm=9mm^2$.

Note: Recall that the width of each character is $1mm$.

Sample Input 1
1 3 1 3 1 4 1 3 2 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 7
zaba

Sample Output 1
28

Explanation 1

The tallest letter in $zaba$ is $z$ at $7mm$. The selection area for this word is $4\times1mm\times7mm=28mm^2$.