Problem:
You have a non-empty set S, and you have to execute N commands given in N lines.
The commands will be pop, remove and discard.

Input Format

The first line contains integer n, the number of elements in the set s.
The second line contains n space separated elements of set s. All of the elements are non-negative integers, less than or equal to 9.
The third line contains integer N , the number of commands.
The next N lines contains either pop, remove and/or discard commands followed by their associated value.

Sample Input

9
1 2 3 4 5 6 7 8 9
10
pop
remove 9
discard 9
discard 8
remove 7
pop
discard 6
remove 5
pop
discard 5

Sample Output

4

Here’s the code:

n = int(input())
s = set(map(int, input().split()))
for _ in range(int(input())):
    cmd, *args = input().split()
    getattr(s, cmd)(*map(int,args))
print(sum(s))