How is the test case given in the image for this problem correct? The only possible sets are {9,10,11} or {9,10,12}. None of them have exactly n/2 terms even or odd. The test case is : {4, 321, {6, 12, 2, 3, 9, 8, 10, 5}, {0, 3, 0, 0, 1, 0, 2, 0}}. Please help!