Many documents use a specific format for a person's name. Write a program that reads a person's name in the following format: firstName middleName lastName $($in one line$)$and outputs the person's name in the following format:lastName, firstInitial.middleInitial. Ex: If the input is: Pat Silly Doethe output is: Doe, P$.$S$.$If the input has the following format:firstName lastName $($in one line$)$the output is:lastName, firstInitial. Ex: If the input is: Julia Clarkthe output is: Clark, J$\mathrm{.}543092$