# name='John Smith'
# age=26
# is_new_patient=True
# print('Name = ',name)
# print("Age = ",age)
# print("Is new patient = ",is_new_patient)
# name=input("What is your name?")
# print('Hi '+name)
# ========================
# name=input("What's your name? ")
# color=input("What's your favourite color? ")
# print(name+' likes '+color)
# ========================
birth_year=input('Enter your birth year ')
print('Your age is =',2020-int(birth_year))