def get_size_for_number_of_cases(number_of_cases):
    """
            for given number_of_cases it returns size of node
    """
    i = 0
    if 0 <= number_of_cases < 10:
        i = 1
    elif 10 <= number_of_cases <25:
        i = 2
    elif 25 <= number_of_cases < 50:
        i = 3
    elif 50 <= number_of_cases < 100:
        i = 4
    elif 100 <= number_of_cases < 200:
        i = 5
    elif 200 <= number_of_cases < 300:
        i = 6
    elif 300 <= number_of_cases <400:
        i = 7
    elif 400 <= number_of_cases <500: 
        i = 8

    size = 10 + i*0.5*5
    return int(size)