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 1\,000\,000)~. 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