a=input("enter the character")
b=input("enter the chareacter")
c=input("enter the chareacter")
if a=="A-Z":
    print("it is alphabet")
    if a=="0-9":
        print("it is numerical")
    elif a=="@#_":
        print("it is specil charecter") 
    else:
        print("invailed") 
else: 
    print(a+b+c)
    print("strong number")
       
   

        