public int[] get(int AminusB, int BminusC, int AplusB, int BplusC) {
		int a = (AminusB + AplusB);
		int b = (BminusC + BplusC);
		int c = (BplusC - BminusC);

		if ((a % 2 != 0) || (b % 1 != 0) || (c % 1 != 0)) {
			return new int[] {};
		}
		if (a - b == AminusB * 2 && b - c == BminusC * 2 && a + b == AplusB * 2
				&& b + c == BplusC * 2) {
			return new int[] { a / 2, b / 2, c / 2 };
		}
		return new int[] {};

   }