摘要:
1013 Battle Over Cities(25分) It is vitally important to have all the cities connected by highways in a war. If a city is occupied by the enemy, all th 阅读全文
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![](https://img2020.cnblogs.com/blog/1516883/202003/1516883-20200327190416510-1799923010.jpg)![](https://img2020.cnblogs.com/blog/1516883/202003/1516883-20200327190421436-2134954321.jpg)![](https://im... 阅读全文
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PAT 1003 Emergency(25分) As an emergency rescue team leader of a city, you are given a special map of your country. The map shows several scattered cit 阅读全文
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1030 Travel Plan(30分) A traveler's map gives the distances between cities along the highways, together with the cost of each highway. Now you are supp 阅读全文