def format(time): 
    """
    Converts time in tenths of seconds to formatted string A:BC.D
    """
    A = time // 600
    B = ((time // 10) % 60) // 10
    C = ((time // 10) % 60) % 10
    D = time % 10
    return str(A) + ":" + str(B) + str(C) + "." + str(D)