For Python3 Platform

Na = int(input())
A = set(map(int, input().split()))
s = int(input())
for i in range(s):
    cmd = input().split()
    B = map(int, input().split())
    
    if(cmd[0] == "intersection_update"):
        A.intersection_update(B)
    elif(cmd[0] == "update"):
        A.update(B)
    elif(cmd[0] == "symmetric_difference_update"):
        A.symmetric_difference_update(B)
    else:
        A.difference_update(B)

print(sum(A))

![](# Enter your code here. Read input from STDIN. Print output to STDOUT

n = int(input())

set1 = set(map(int,input().split()))

choice = int(input())

for _ in range(choice): op1, size = input().split() other_set = set(map(int, input().split()))

if op1 == 'intersection_update':
    set1.intersection_update(other_set)
elif op1 == 'update':
    set1.update(other_set)
elif op1 == 'symmetric_difference_update':
    set1.symmetric_difference_update(other_set)
elif op1 == 'difference_update':
    set1.difference_update(other_set)

print(sum(set1))https://)

#What separates my solution is the usage of eval function: which can dynamically execute any text representing a particular function. Most solutions set a conditional logic to determine which function to run.

A_len = int(input()) A_set = set( map(int, input().split(" ")) )

N_len = int(input()) for n in range(N_len): #iteration of 0 to Nth X_str = input().split(" ") X_fx_str = X_str[0] X_set =set( map(int, input().split(" ")) )
eval( f"A_set.{X_fx_str}(X_set)" ) #This is where the eval function used

print(sum(A_set))

N = int(input()) a = set(map(int,input().split()))
b = int(input()) for _ in range(b): operation = input().split() #print(operation) otherset = set(map(int,input().split())) #print(otherset) if len(otherset) == int(operation[1]): if operation[0] == "update": a.update(otherset)
#print(a) elif operation[0] == "intersection_update": a.intersection_update(otherset) #print(a) elif operation[0] == "difference_update": a.difference_update(otherset) #print(a) elif operation[0] == "symmetric_difference_update": a.symmetric_difference_update(otherset) #print(a) else: print("Plese enter according to the Number") print(sum(a))