/*
 * @lc app=leetcode.cn id=51 lang=c
 *
 * [51] N 皇后
 */

// @lc code=start
/**
 * Return an array of arrays of size *returnSize.
 * The sizes of the arrays are returned as *returnColumnSizes array.
 * Note: Both returned array and *columnSizes array must be malloced, assume caller calls free().
 */
char*** solveNQueens(int n, int* returnSize, int** returnColumnSizes) {
    
}
// @lc code=end