age = int(input("나이를 입력하세요"))

# if age<14:
#     print("어린이 ~")
# else : 
#     if age >=14 and age<20:
#         print("청소년~!")
#     else :         
#         print("어른~!")

# # elif를 사용


#if age<14:
#     print("어린이")
# elif age >=14 and age<20:
#     print("청소년")
# elif age >=20 and age <50:
#     print("청년")
# else:
#     print("노땅!!")