Rock is an ICT teacher, one day, he realized that the number of students taking ICT suddenly increased, maybe some students decided to un-drop the subject. However, Rock thinks this is very suspicious and asks you to identify the imposters in his class.

Input

The first line consists of an integer $N$ $(1 \leq N \leq 1000)$.
The next line consists of $N$ strings of only letters.

Output

Output the imposters in the order they appear or sus if there are none.