class Solution {
public:
vector<vector<int> > findContinuousSequence(int sum) {
vector<vector<int> >res;
int s=1;
for(int i=1,j=1;i<=(sum+1)/2;i++)
{
while(s<sum) j++,s+=j;
if(s==sum&&i<j)
{
vector<int>cnt;
for(int k=i;k<=j;k++) cnt.push_back(k);
res.push_back(cnt);
}
s-=i;
}
return res;
}
};