text: class FoxAndIntegers:
      def get(self, AminusB, BminusC, AplusB, BplusC):
          a = (AminusB + AplusB) / 2
          b = AplusB - a
          c = BplusC - b
          if a - b == AminusB and b - c == BminusC:
              return (a, b, c)
          return ()
  