Submission #3215613

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Source Code Expand

N = int(input())
L = list(map(int,input().split()))
L.sort()
L.reverse()
A = []
i = 0
while (0 <= i <= N-2):
  if (L[i] == L[i+1]):
    A.append(L[i])
    i += 2
    if (len(A) == 2):
      break
  else:
    i += 1
if (len(A) == 2):
  print(A[0]*A[1])
else:
  print(0)

Submission Info

Judge Result