1. You are given a number n, representing the size of a n * n chess board.
2. You are required to calculate and print the permutations in which n queens (distinct) can be
placed on the n * n chess-board.
3. No queen shall be able to kill another.
Note -> Use the code snippet and follow the algorithm discussed in question video. The judge can't
force you but the intention is to teach a concept. Play in spirit of the question.
Input Format
A number n
Output Format
Check the sample output and question video
Constraints
1 <= n <= 5
Notice
Try First, Check Solution later
1. You should first read the question and watch the question video.
2. Think of a solution approach, then try and submit the question on editor tab.
3. We strongly advise you to watch the solution video for prescribed approach.
1. You should first read the question and watch the question video.
2. Think of a solution approach, then try and submit the question on editor tab.
3. We strongly advise you to watch the solution video for prescribed approach.
Example
Input
4
Output
- q1 - - - - - q2 q3 - - - - - q4 - - q1 - - - - - q2 q4 - - - - - q3 - - q1 - - - - - q3 q2 - - - - - q4 - - q1 - - - - - q4 q2 - - - - - q3 - - q1 - - - - - q3 q4 - - - - - q2 - - q1 - - - - - q4 q3 - - - - - q2 - - - q1 - q2 - - - - - - q3 - q4 - - - - q1 - q2 - - - - - - q4 - q3 - - - - q1 - q3 - - - - - - q2 - q4 - - - - q1 - q4 - - - - - - q2 - q3 - - - - q1 - q3 - - - - - - q4 - q2 - - - - q1 - q4 - - - - - - q3 - q2 - - - - q2 - q1 - - - - - - q3 - q4 - - - - q2 - q1 - - - - - - q4 - q3 - - - - q3 - q1 - - - - - - q2 - q4 - - - - q4 - q1 - - - - - - q2 - q3 - - - - q3 - q1 - - - - - - q4 - q2 - - - - q4 - q1 - - - - - - q3 - q2 - - - q2 - - - - - q1 q3 - - - - - q4 - - q2 - - - - - q1 q4 - - - - - q3 - - q3 - - - - - q1 q2 - - - - - q4 - - q4 - - - - - q1 q2 - - - - - q3 - - q3 - - - - - q1 q4 - - - - - q2 - - q4 - - - - - q1 q3 - - - - - q2 - - q2 - - - - - q3 q1 - - - - - q4 - - q2 - - - - - q4 q1 - - - - - q3 - - q3 - - - - - q2 q1 - - - - - q4 - - q4 - - - - - q2 q1 - - - - - q3 - - q3 - - - - - q4 q1 - - - - - q2 - - q4 - - - - - q3 q1 - - - - - q2 - - - q2 - q3 - - - - - - q1 - q4 - - - - q2 - q4 - - - - - - q1 - q3 - - - - q3 - q2 - - - - - - q1 - q4 - - - - q4 - q2 - - - - - - q1 - q3 - - - - q3 - q4 - - - - - - q1 - q2 - - - - q4 - q3 - - - - - - q1 - q2 - - - - q2 - q3 - - - - - - q4 - q1 - - - - q2 - q4 - - - - - - q3 - q1 - - - - q3 - q2 - - - - - - q4 - q1 - - - - q4 - q2 - - - - - - q3 - q1 - - - - q3 - q4 - - - - - - q2 - q1 - - - - q4 - q3 - - - - - - q2 - q1 - - - q2 - - - - - q3 q4 - - - - - q1 - - q2 - - - - - q4 q3 - - - - - q1 - - q3 - - - - - q2 q4 - - - - - q1 - - q4 - - - - - q2 q3 - - - - - q1 - - q3 - - - - - q4 q2 - - - - - q1 - - q4 - - - - - q3 q2 - - - - - q1 -