You are developing a program for a pizza ordering system. The program should take two inputs: pizza size $(1$ for Small, $2$ for

Medium, $3$ for Large$)$ and pizza type $(1$ for Margherita, $2$ for Pepperoni, $3$ for Veggie$).$ Based on these inputs, calculate and

display the total cost of the pizza.

Pricing details:

$1.$ Small pizza: $$82.$ Medium pizza: $$123.$ Large pizza: $$15$

Additional charges for specific types:

$1.$ Margherita: No additional charge $2.$ Pepperoni: $$2$ extra $3.$ Veggie: $$3$ extra

For example:

Input:

Pizza Size: $2($Medium$)$

Pizza Type: $3($Veggie$)$

Output:

Total Cost: $$15($Medium pizza base cost$)+$ $$3($Veggie extra charge$)=$ $$18$

Implement the solution using nested selection structure.