旅行推销员问题是一个最受人喜爱的数学难题：如果一个推销员不得不访问几个城市，怎样走最短的路线使他一次到达这几个城市。

The traveling salesman problem is a favorite math conundrum: if a salesman has to visit a bunch of cities, how do you get him to all of them once via the shortest possible route.

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尼尔是那种喜爱户外活动的男人，只要来点骑车旅行、远足或攀岩之类的活动，他就会情绪高涨。

Neil always was an outdoors type of Guy, always up for a spot of cycling, hiking or rock-climbing.

youdao

尼尔是那种喜爱户外活动的男人，只要来点骑车旅行、远足或攀岩之类的活动，他就会情绪高涨。

Neil always was an outdoors type of Guy, always up for a spot of cycling, hiking or rock-climbing.

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