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

Set Mutations

  • infracookies
     + 10 comments

    I liked this solution better than the editorial:

    (_, A) = (
    raw_input(),
    set(map(int, raw_input().split()))
)

for _ in xrange(input()):
    (command, newSet) = (
        raw_input().split()[0],
        set(map(int, raw_input().split()))
    )

    # Cool trick. Since our commands are method names, just
    # execute the method on A with our new set as its argument.
    getattr(A, command)(newSet)

print str(sum(A))