def longestConsecutive(nums):
        """
        :type nums: List[int]
        :rtype: int
        """
        nums.sort()
        length = len(nums)
        sequence = []
        larger = []
        for x in nums:
            if x < length and x not in sequence:
                sequence.append(x)
            else:
                larger.append(x)
        return len(sequence)

print(longestConsecutive([100,4,200,1,3,2]))
print(longestConsecutive([0,3,7,2,5,8,4,6,0,1]))