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  1. n=int(input())
  2. for i in range(n):
  3. z=int(input())
  4. wartosci=input().split()
  5. for j in range(z):
  6. wartosci[j]=int(wartosci[j])
  7. wartosci.sort()
  8. print(max(wartosci[z-1]*wartosci[z-2]*wartosci[z-3],wartosci[z-1]*wartosci[0]*wartosci[1]))
Success #stdin #stdout 0.03s 9832KB
stdin
3
5
1 4 3 2 5
4
-2 1 1 5
5
-10 -10 -10 1 1
stdout
60
5
100