Count Distinct Flowers

You are given a list representing a garden where each flower is described by a string containing its type and color. Your task is to determine the number of distinct flower descriptions.

For example, if the input list is ["rose red", "tulip yellow", "rose white", "rose red"], the distinct flowers are "rose red", "tulip yellow", and "rose white", leading to an answer of 3.

Note: The input begins with an integer $n$ representing the number of flowers, followed by $n$ lines each containing a flower description.

inputFormat

The input is provided via standard input (stdin) in the following format:

• The first line contains an integer $n$, the number of flowers.
• The following $n$ lines each contain a string representing a flower's type and color.

outputFormat

Output a single integer to standard output (stdout), indicating the number of distinct flower descriptions.## sample

6
rose red
tulip yellow
rose white
rose red
daisy pink
tulip yellow

4