Write a C$++$ program and utilize STL :

You are provided with a manuscript by Hemingway $($OldMan$.$txt$),$ image of file attached, and you are asked to summarize its content by building a histogram of the word sums.

a$.$ Read the manuscript OldMan.txt and store each word and word sum into a Map container Text $($string Word, int WrdSum$)$ where WrdSum is the sum all characters in Word threshold down by $65($A$)$ the letter $$A$$ should have a numerical value of WrdSum

b$.$ Output in descending order the total number of unique entries in the Text $($string Word, int WrdSum$)$

c$.$ Find out the Word with greatest WrdSum $($WrdMax$)$

d$.$ Create Histogram$($Histo$)$ array of size WrdMax$/50$ and initialize it to zero. Calculate each entry and update count how many WrdSum belong in that slot

e$.$ Output contents of histogram $($element #$,$ #of words belonging in that slot$)$

f$.$ Calculate the TotalSum of all entries in the Histo

$$ compare with Text.size$()$

$$ compare with wc OldMan.txt $($Linux function$)$

$$ Explain differences