题意: 有一个单行道,两个方向都有车在等待.给出每个车的方向以及到达的时间以及走完这段路所需要的时间. 为了防止车祸,同向两车通过任一点的时间间隔不得小于10s. 求最后一辆车离开时刻的最小值. 思路: 这题最坑的就是,车可以降低速度.provided it is not slowed down by other cars in front. 分析一下样例2, 4 A 0 100 B 50 100 A 100 1 A 170 100 首先B走,到达时间为150s,之后A1走,到达时间为2…
XML Data Type Methods(一) /*XML Data Type Methods: 1.The query('XQuery') method retrieves(vt.检索,重新得到) a subset of untyped XML from the target XML instance 2.The value('XQuery',dataType) method returns a scalar value(标量值) from the targeted XML document…
You live in a small town with R bidirectional roads connecting C crossings and you want to go from crossing 1 to crossing C as soon as possible. You can visit other crossings before arriving at crossing C, but it's not mandatory. You have exactly one…