Write a program that reads sequences of integer numbers
and prints the maximum value of each sequence.
Input
Input contains several sequences.
Each sequence begins with its number of elements n > 0,
followed by n integer numbers.
Output
Print the maximum of every sequence, one per line.
About statements
The official statement of a problem is always the one
in the PDF document. The HTML version of the statement
is also given to help you, but may contain some content
that is not well displayed. In case of doubt, always use the PDF.