int matrixElementsSum(int[][] matrix) {
    int result = 0;
    for (int i = 0; i < matrix.length-1; i++)
    {
        for (int j = 0; j < matrix[i].length; j++)
        {
            if(matrix[i][j] == 0)
            {
                matrix[i+1][j] = 0;
            }
            System.out.println(matrix[i][j]);
            result += matrix[i][j];
        }

    }
return result;
}