Problems
Arithmetical mean
Arithmetical mean
The sequence of integers is given. Find its arithmetical mean.
Input
In one line the integers are given, each of the numbers is no more than 100 by absolute value.
Output
Print the arithmetical mean of all elements in the sequence. Print the answer with 4 decimal digits.
Input example #1
1 2 3 4 5
Output example #1
3.0000
Input example #2
5 5 7 1 2 9
Output example #2
4.8333