public static void Main()
int n = int.Parse(Console.ReadLine());
string[] input = Console.ReadLine().Split(' ');
for(int i = 0; i < n; i++)
nums[i] = int.Parse(input[i]);
if(countEven > 0 && countOdd > 0 && countEven != countOdd)
Console.WriteLine(lastOddPos + 1);
Console.WriteLine(lastEvenPos + 1);