class Solution:
def reductionOperations(self, nums: List[int]) -> int:
#TC: O(n log n) n = len(nums)
#SC: O(1)
#中国地图,阶梯状下降
nums.sort()
res = 0
for i in range(len(nums)-1,0,-1):
if nums[i] != nums[i-1]:
res = res + len(nums) - i
return res