You Do Need power plug adapter while traveling from Libya to San Marino.

Here is Why You Need An Adapter

The outlet and plug type used in San Marino are C, F and L and in Libya are C and L. This is how they look like.

Libya

In Libya, outlets of type C and L are in use.

Type C

Type L

San Marino

In San Marino, outlets of type C, F and L are in use.

Type C

Type F

Type L