using System;

public class Program

{

    public static void Main()

    {

        int[] X={10,-10,-1,-1,10};

        int result = solution(X);

        Console.WriteLine(result);

        Console.WriteLine("___________________________________");

        int[] B={-1,-1,-1,1,1,1,1};

        int result2 = solution(B);

        Console.WriteLine(result2);

        Console.WriteLine("___________________________________");

        int[] C={5,-2,-3,1};

        int result3 = solution(C);

        Console.WriteLine(result3);

    }

    public static int solution(int[] A)

    {

        int sum = 0, count = 0, last= 0;

        last = A.Length;

        sum= A[0];

        if(sum<0)

            count++;

        for (int i =1; i<last; i++)

        {

            sum=sum+A[i];

            Console.WriteLine(sum);

            if(sum<0 && (A[i]<0))

               {

                   count++;

                   sum= sum-A[i];

                   last--;

               }

        }

        return count;

    }

}