Statistical measures

Write a program to compute the most common statistical measures
(minimum, maximum and average) of several integer numbers. These numbers
are known increasingly. At every moment, it is also possible to delete
the smallest element.

Input

Input consists of a sequence of (possibly, many) numbers, together with
deleting instructions, as can be seen in the sample input. The numbers
may be repeated. Deleting means removing the smallest element (one
instance of it, if it is repeated). If there are no elements, deleting
does nothing.

Output

After every instruction of the input, print the minimum, maximum and
average of the current elements with four digits after the decimal
point, or tell that there are no elements. Follow the format of the
sample output.

Problem information

Author: Unknown
Translator: Salvador Roura

Generation: 2026-01-25T11:33:21.890Z

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