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1 One Sunday afternoon, Leslie was at home with her kids, 3-year-old Angel, 6-year-old Carl, and 7-year-old Tony.
翻译
一个周日的下午,Leslie和她的孩子们在家,他们是3岁的Angel,6岁的…
题干: 代码:
class Solution {
public:vector<vector<string>> res;void backtracking(vector<string>& chessboard, int n, int row){if(row n){res.push_back(chessboard);return;}for(int col 0; col < n; col){if(isvalid(chessboa…