Based on depth first search, the article USES route deletion and node deletion methods to produce multi-solutions, and then determine the optimum solution with least costing.

以深度优先搜索作为基本算法，用路径删除和结点删除方法产生多重解，用最小成本法求出最优解。

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And George W Bush proclaimed that the US would work to expand "freedom in all the world", a laudable enterprise, no doubt, but one which, at least in Iraq and Afghanistan, has met with questionable success while costing a great deal in American lives and money.

BBC: A Point of View: Roll up for the inauguration

Now, Warner Bros. has canceled the show (at least for the rest of the season) putting dozens of people out of work and costing the network millions of dollars.

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