In this paper, optimal algorithms are put forward, and can greatly reduce space and time complexity degree of previous algorithms.

针对原有算法，本文提出了优化算法，大大改善它的时间和空间复杂度。

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"Back then it was just a competition in California. Now it's a global race, and this time on real roads with a much greater degree of complexity compared to 2007," Rojas said.

罗哈斯说“从前那只是一个加州的比赛。现在它已经成一个全球性的赛事。并且与2007年比起来这次的赛事路况更加复杂以趋于真实的路况。”

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