# The arithmetic mean of positive

Very easy

Execution time limit is 1 second

Runtime memory usage limit is 128 megabytes

The sequence of real numbers is given. Find the arithmetic mean of positive numbers.

## Input

First line contains amount n (0 < n ≤ 100) of real numbers. Next line contains n real numbers, each of them is not greater than 100 by absolute value.

## Output

Print the arithmetic mean of positive numbers with 2 digits after decimal point. If the positive numbers do not appear in the sequence, print "Not Found" (without quotes).

## Examples

Input #1

Answer #1

Input #2

Answer #2

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