Leetcode 2739. Total Distance Traveled

Compute the total usable fuel when every time 5 liters are consumed from the main tank an instantaneous 1-liter transfer occurs from the additional tank if available, and return the maximum distance given the truck runs 10 km per liter. This reduces to counting how many extra 1-liter transfers can happen (bounded by additionalTank) and multiplying total usable liters by 10.