New puzzle from codeforces 136 A

[akalai]

def sat(indexes):
 """
 Given a list of integers representing a permutation, invert the permutation.

 Inspired by [Codeforces Problem 136 A](https://codeforces.com/problemset/problem/136/A)
 """
 target=[1, 3, 4, 2, 5, 6, 7]
 for i in range(1, len(target) + 1):
 if target[indexes[i - 1] - 1] != i:
 return False
 return True

Solvers, post your solutions in the comments using the following formatting:

<details><summary>Reveal solution</summary>

```python
def sol():
 return "world" # replace with your solution
```
</details>