Function n_queens

python3/Backtracking/n_queens.py:5–7

(n: int)

res = 0
def n_queens(n: int) -> int:
    dfs(0, set(), set(), set(), n)
    return res

def dfs(r: int, diagonals_set: Set[int], anti_diagonals_set: Set[int], cols_set: Set[int], n: int) -> None:
    global res