def merge_dictionaries(dict1,dict2):
    import collections as ct
    
    merged_dict = dict(ct.ChainMap({}, dict1, dict2))
    return merged_dict
def is_not_prime(n):
    import math
    
    result = False
    for i in range(2,int(math.sqrt(n)) + 1):
        if n % i == 0:
            result = True
    return result