public static void Main()
if(nums.Length==1) Console.WriteLine(nums[0]);
for(var i=0 ; i<nums.Length ; i++)
a = Math.Max(a+nums[i], b);
b = Math.Max(a, b+nums[i]);
if(!bigger && nums.Length%2!=0)
Console.WriteLine(Math.Max(a-nums[nums.Length-1],b));
Console.WriteLine(Math.Max(a,b));