Arithmetical mean
Very easy
Execution time limit is 1 second
Runtime memory usage limit is 128 megabytes
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.
Examples
Input #1
Answer #1
Input #2
Answer #2
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