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Find Efficient way
- To solve the Unique Paths problem, we can use a recursive or DP approach.
- To solve the Spiral Matrix problem, we can use four different loops to traverse in all four directions.
- To solve the N-Queens problem, we can use recursion and backtracking, and optimize it by using three lists.
- The three lists can efficiently keep track of rows and diagonals where queens are placed.
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