Rating Simulation

Medium · rating 1250 · Simulation

A player starts at rating start; each win adds k and each loss subtracts k, but the rating never drops below 0. The first line has start and k. The second line is a string of W/L results. Print the final rating.

Constraints: 0 ≤ start ≤ 10⁶, 1 ≤ k ≤ 10⁴

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