using System;
 
public class Test
{
	public static void Main()
	{
		int[] dizi = { 4, 5, -15, 22, -34, 3, 0, 7, 43, 100 };
		int x = biggestNegative(dizi);
		Console.WriteLine(x);
 
 
	}
	static int biggestNegative(int[] dizi)
		{
			int maxNumber = 0;
            for (int i = 0; i < dizi.Length; i++) {
             if (dizi[i] < 0) {
              if (maxNumber == 0 || dizi[i] > maxNumber ) {
                maxNumber = dizi[i];
              }
              }
             }
           return maxNumber;
		}
}

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