You have an empty set. You have to support Q queries in the form —

1 X: Insert an element X in the set. It is guaranteed that X isn't already present in the set.

2 X: Delete an element X from the set. It is guaranteed that X is present in the set.

3 Y: Find and print sum of maximum Y elements in the set. If there are less than Y elements in the set, you need to print sum of all elements.

What is the best way to solve this problem? X<=10^9, Q<=10^5 Y<=10^5