Candy
There are n children standing in a line. Each child is assigned a rating value given in the integer array ratings.
You are giving candies to these children subjected to the following requirements:
- Each child must have at least one candy.
- Children with a higher rating get more candies than their neighbors.
Return the minimum number of candies you need to have to distribute the candies to the children.
Example 1
Input
ratings = [1,0,2]Output
5You can allocate to the first, second and third child with 2, 1, 2 candies respectively.
Example 2
Input
ratings = [1,2,2]Output
4You can allocate to the first, second and third child with 1, 2, 1 candies respectively, and the third child gets 1 candy because it satisfies the two conditions.
Constraints
- n == ratings.length
- 1 <= n <= 2 * 10^4
- 0 <= ratings[i] <= 2 * 10^4