#
# 代码中的类名、方法名、参数名已经指定，请勿修改，直接返回方法规定的值即可
#
# 
# @param nums int整型一维数组 
# @return int整型
#
class Solution:
    def singleNumberII(self , nums: List[int]) -> int:
        # write code here
        one=0
        two=0
        for num in nums:
            one = (one^num) & ~two
            two = (two^num) & ~one
        return one