class Solution(object):
    def findContinuousSequence(self, sum):
        """
        :type sum: int
        :rtype: List[List[int]]
        """
        # sn=(a1+an)n/2 an=a1+n-1 sn=(a1+a1+n-1)n/2
        # 1000=(1+x)x/2 2000>x+x² x²+x-2000>0
        als=[]
        for x in range(1,sum):
            for y in range(45):
                num=(x+x+y-1)*y/2
                if num==sum:
                    als.append([i for i in range(x,x+y)])
                    break
        # print(als)
        return als