def check_String(str):
     
    flag_l = False
    flag_n = False
    for i in str: 
        if i.isalpha(): 
            flag_l = True  
        if i.isdigit(): 
            flag_n = True
    return flag_l and flag_n 
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