username='xiaoming'
age=18
hello=input(f'我的名字叫{username},今年{age}岁')
print(hello)
print(username.upper())
print(len(username))
dXNlcm5hbWU9J3hpYW9taW5nJwphZ2U9MTgKaGVsbG89aW5wdXQoZifmiJHnmoTlkI3lrZflj6t7dXNlcm5hbWV9LOS7iuW5tHthZ2V95bKBJykKcHJpbnQoaGVsbG8pCnByaW50KHVzZXJuYW1lLnVwcGVyKCkpCnByaW50KGxlbih1c2VybmFtZSkp