## Editorial for JDCC '15 Contest 2 P1 - Lifting Weights

Remember to use this editorial only when stuck, and not to copy-paste code from it. Please be respectful to the problem author and editorialist.

Submitting an official solution before solving the problem yourself is a bannable offence.

The amount of weight that Lily can lift grows linearly. This means that we can develop a linear equation of how much she is able to lift in the form of:

$$y = Bx + A$$

Where $$B$$ is how much more she can lift every week, and $$A$$ is how much she can lift at the start.

The only trick to this problem is to note that we don't add $$B$$ to the amount she can lift $$N$$ times, as Lily's doesn't get stronger until the second week. So, we have $$x = N - 1$$.

The final output for each test case is $$B \times (N - 1) + A$$.

Time Complexity: $$\mathcal{O}(1)$$