Write a program that calculates the arithmetic mean. The arithmetic mean is a sum of all numbers divided by their total count.
The input format:
Read an integer number n. This is a number of integer values you will receive on the next n lines.
Your program should compute the mean value of those n integers.
The output format:
Print the mean as a float number.
You can save n to a variable and then call the
input() function exactly n times using for loop.