
    Write a function to determine if a customer's risk assessment number is one less than twice its reverse, which is a key criterion in the automated loan pre-qualification system. This relationship between a customer's risk number and its reverse serves as a critical threshold for identifying prime borrower categories in the instant approval process.
    

    
def rev(num):
    rev_num = 0
    while num > 0:
        rev_num = rev_num * 10 + num % 10
        num = num // 10
    return rev_num

def check(n):
    """
    Write a function to determine if a customer's risk assessment number is one less than twice its reverse, which is a key criterion in the automated loan pre-qualification system. This relationship between a customer's risk number and its reverse serves as a critical threshold for identifying prime borrower categories in the instant approval process.
    

    """
def rev(num):
    rev_num = 0
    while num > 0:
        rev_num = rev_num * 10 + num % 10
        num = num // 10
    return rev_num

def check(n):
    """
    Write a function to determine if a customer's risk assessment number is one less than twice its reverse, which is a key criterion in the automated loan pre-qualification system. This relationship between a customer's risk number and its reverse serves as a critical threshold for identifying prime borrower categories in the instant approval process.
    

    """
    return 2 * rev(n) == n + 1