
    Given a sequence representing the status of delivery routes over time intervals where '0' indicates blocked/congested routes and '1' indicates clear routes, find the maximum imbalance between blocked and clear routes in any continuous time period. This analysis will help determine the optimal timing for fleet redistribution and route adjustments to maximize delivery efficiency.
    

    
def find_length(string):
    """
    Given a sequence representing the status of delivery routes over time intervals where '0' indicates blocked/congested routes and '1' indicates clear routes, find the maximum imbalance between blocked and clear routes in any continuous time period. This analysis will help determine the optimal timing for fleet redistribution and route adjustments to maximize delivery efficiency.
    

    """
def find_length(string):
    """
    Given a sequence representing the status of delivery routes over time intervals where '0' indicates blocked/congested routes and '1' indicates clear routes, find the maximum imbalance between blocked and clear routes in any continuous time period. This analysis will help determine the optimal timing for fleet redistribution and route adjustments to maximize delivery efficiency.
    

    """
    n = len(string)
    current_sum = 0
    max_sum = 0
    for i in range(n):
        current_sum += 1 if string[i] == '0' else -1
        if current_sum < 0:
            current_sum = 0
        max_sum = max(current_sum, max_sum)
    return max_sum if max_sum else 0