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  1. Prepare
  2. Python
  3. Sets
  4. The Captain's Room
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The Captain's Room

  • satyasouravssp0
     + 0 comments
    K = int(input())
arr= list(input().split())
s =set(arr)

for ch in s:
    arr.remove(ch)
temp = s.difference(set(arr))
print("".join(temp))