## BlueBook - Equation

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Points: 3
Time limit: 1.0s
Memory limit: 16M

Problem type
##### BlueBook

Given the real coefficients and , solve for in the following equation.

Be sure to output "indeterminate" and "undefined" whenever appropriate. Remember is indeterminate, and something like is undefined.

Output the value of rounded to two decimal places.

#### Input Specification

The input consists of two real numbers, and . and will be on separate lines, with first, and second.

#### Output Specification

Output the value of according to the given values and equation. Be sure to output indeterminate and undefined whenever appropriate.

#### Sample Input 1

10
5

#### Sample Output 1

-0.50

#### Sample Input 2

13.5555
1.244685

#### Sample Output 2

-0.09

#### Sample Input 3

0
0

#### Sample Output 3

indeterminate

#### Sample Input 4

0
4

#### Sample Output 4

undefined