BlueBook

Given $T$ real numbers, find and output the largest one to four decimal places.

Input Specification

The first line contains a single integer $T$ $(1\le T\le 1000000)$. Each of the following $T$ lines contains one real number $x_i$ $(-{10}^6\le x_i\le {10}^6)$.

Output Specification

A single line: the largest of the $T$ real numbers.

Sample Input

3
1.5
3
2.2

Sample Output

3.0000