Editorial for Mock CCC '22 Contest 1 J2 - Biking and Hiking


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

To solve this problem, we can maintain a speed counter.

On uphills, we reduce the counter by one if it is positive. If the counter is 0, we add one to our answer.

On downhills, we increase the counter by one.

On flat sections, if the counter is 0, we add one to our answer.

Time Complexity: \mathcal{O}(N)


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