
    Write a function that validates a route identifier number, where each digit represents a traffic density level (0-9) for different route segments, to ensure optimal route distribution by checking if the occurrence count of each density level does not exceed its actual value. For example, in a route number, the digit 3 should not appear more than 3 times, the digit 2 should not appear more than 2 times, and so on.
    

    
def validate(n):
    """
    Write a function that validates a route identifier number, where each digit represents a traffic density level (0-9) for different route segments, to ensure optimal route distribution by checking if the occurrence count of each density level does not exceed its actual value. For example, in a route number, the digit 3 should not appear more than 3 times, the digit 2 should not appear more than 2 times, and so on.
    

    """
def validate(n):
    """
    Write a function that validates a route identifier number, where each digit represents a traffic density level (0-9) for different route segments, to ensure optimal route distribution by checking if the occurrence count of each density level does not exceed its actual value. For example, in a route number, the digit 3 should not appear more than 3 times, the digit 2 should not appear more than 2 times, and so on.
    

    """
    for i in range(10):
        temp = n
        count = 0
        while temp:
            if temp % 10 == i:
                count += 1
            if count > i:
                return False
            temp //= 10
    return True