ith type of fruit, and baskets[j] represents the capacity of the jth basket.

From left to right, place the fruits according to these rules:

Each fruit type must be placed in the leftmost available basket with a capacity greater than or equal to the quantity of that fruit type.
Each basket can hold only one type of fruit.
If a fruit type cannot be placed in any basket, it remains unplaced.

Return the number of fruit types that remain unplaced after all possible allocations are made.

Input: fruits = [4,2,5], baskets = [3,5,4]
Output: 1
Explanation:
* `fruits[0] = 4` is placed in `baskets[1] = 5`.
* `fruits[1] = 2`