------
## 最终结论
```python
def long_words(n, sentence):
    words = sentence.split()
    return [word for word in words if len(word) > n]

# Test cases
assert long_words(3,"python is a programming language")==['python','programming','language']
assert long_words(2,"writing a program")==['writing','program']
assert long_words(5,"sorting list")==['sorting']
```