How to get IndexPath of parent list when one or more cells are expanded.

[aqsa-arshad08]

Is there a way to get the Indexpath of parent list. Lets

Parent {
index 0 : [child1, child2, child3]
index 1 : [child 1, child 2]
index 2 : null
}

How I can get the indexpath of normal cell when some of cells are expanded. In this case if index 0 is expanded and i click on normal cell then i will get indexpath (0+3+2) = 5. where as i want 2.
Any way to achieve this.