Python: Mid$-$size universities have enrollments in the range $11000-18500$ inclusive. Write an if statement that outputs 'Not a mid$-$size university' if the input num$\_$students is not in this range. Otherwise, output 'Mid$-$size university'.

Ex $1$: If the input is $31500,$ then the output is:

Not a mid$-$size university

Ex $2$: If the input is $15000,$ then the output is:

Mid$-$size university