The first line contains two integers $n$ and $x$ ($1\le n\le 10^5$, $1\le x\le 10^9$)~--- the number of math tasks and how long Bohdanchik solves the homework of a certain topic for the first time.

The second line contains $n$ numbers $a_1, a_2, \dots, a_n$ ($1\le a_i\le 10^9$)~--- the topic of the $i$-th task.