StarMath

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

Authors:
Problem type
Diagnostic Test 2016 Level 1

The members of team starfax learned math in an unconventional way such that they were unable to use calculators. Instead of addition, subtraction, multiplication, and division, with the numbers a and b, the equation a\ \$\ b equals a^2 - b^2, the equation a\ @\ b equals (b \times a) / (2a - 3), and the equation a\ \#\ b equals (a \times b) (b - 14). Due to this being so hard without calculators, the students requested you to make a program for them. Given the integers a and b (-1\,000 \le a \le b \le 1\,000), and an operand o ($, @, or #), calculate the answer to the provided question. Output the string The equation [a] [o] [b] is equal to [answer]. The answer will always be an integer after calculations.

Sample Input 1

3
$
7

Sample Output 1

The equation 3 $ 7 is equal to -40.

Sample Input 2

4
#
0

Sample Output 2

The equation 4 # 0 is equal to 0.

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