Let's make an algorithm!

Description of the problem

Describe the problem. The placeholder text is intended to provide some direction, but shouldn't be followed too rigorously. LaTeX statements may be used if necessary.

1 What is the input for the algorithm?
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Describe the datastructures given to the algorithm. Do the contents of
  the datastructures have any kind of structure themselves? Any kind of
  known structure in the data handled can be greatly helpful. Give an
  estimate of the size of the inputs.

2 What is the desired output of the algorithm?
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Describe what you want the algorithm to return.

3 Complexity and optimality of the algorithm
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Especially when dealing with superpolynomial problems, you shouldn't
  hope to always get accurate return values from an algorithm while
  still actually having the algorithm finish in practical time. Can you
  live with approximate answers from the algorithm?

4 Platform
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Is the algorithm going to be run on a supercomputer, a
  microcontroller, or something in between?

5 Target programming language
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What programming language are you going to use for the implementation?

Company name

Finnish business ID or VAT number

Your name

Billing information

Contact information

Enough contact information to complete the task.

Additional information

Other relevant information. For example, you may tell about the schedule.