x,y = map(str,input().split())
while not (x.isdigit() and y.isdigit()):
x,y = map(str,input().split())
print(int(x)+int(y))
2)Correct_login = "maxum000"
Correct_passw = "12345"
while (True):
login = input("Логин: ")
passw = input("Пароль: ")
if (login == Correct_login and passw == Correct_passw):
print("Добро ,", login)
break
elif (login != Correct_login):
print("Такого пользователя и пароля не существует.")
elif (login == Correct_login and passw != Correct_passw):
print("Неверный пароль, попробуйте снова.")
