1
3
10 12
15 17
19 30
1
3
10 12
15 17
19 30
Hi @Doctor_Insult, the answer for the following input will be 3 as we can do all 3 task in the given order
as none of the intervals are overlapping
In case of any doubt feel free to ask 
If you got the answer then mark your doubt as resolved
Isn’t this problem DP based? I mean I cannot think of any algo which can solve this problem, and as of now, I have not done DP. Should I leave it?
this is a greedy based solution
thanks a lot. I was doing it in reverse.