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  1. Prepare
  2. Python
  3. Sets
  4. Set Mutations
  5. Discussions

Set Mutations

  • ss3225220
     + 1 comment
    A = int(input())
set_A = set(map(int,input().split()))
B = int(input())

for _ in range(B):

    command = list(map(str, input().split()))
    set_B = set(map(int,input().split()))
    
    if command[0].lower() == 'intersection_update':
        set_A &= set_B
    elif command[0].lower() == 'update':
        set_A |= set_B
    elif command[0].lower() == 'symmetric_difference_update':
        set_A ^= set_B
    elif command[0].lower() == 'difference_update':
        set_A -= set_B
        

print(sum(set_A))