Adjusted Average

Sejun is unhappy with his final exam scores and wants to recalculate them by the following rule. First, choose the maximum current score and call it M. Then replace each score x with x / M * 100.

For example, if the highest score is 70 and the math score is 50, the math score becomes 50 / 70 * 100, or 71.43.

Write a program that computes the new average after every score is recalculated this way.

The first line contains the number of subjects N. N is at most 1000.

The second line contains N current scores separated by spaces. Each score is a nonnegative integer at most 100, and at least one score is greater than 0.

Print the new average on the first line. An answer is accepted if its absolute or relative error from the true answer is at most 10^-2.