摘要： 描述 Every time it rains on Farmer John's fields, a pond forms over Bessie's favorite clover patch. This means that the clover is covered by water for a 阅读全文

摘要： 描述 如今的校园谈恋爱已是习以为常，这不，去上自习也要成双成对的。现在假设某班里有N对情侣从同一寝室楼出发，到达同一个教室上自习。途中，她们可能会经过长廊、静溪等一系列的景点观光游览。但情侣们不希望在途中碰到班里的其他情侣而扫了雅兴。现在给定包括寝室、教室、以及各个景点在内共有M个场景，以及这些场景 阅读全文

摘要： 描述 the second year of the university somebody started a study on the romantic relations between the students. The relation “romantically involved” is 阅读全文

摘要： 描述 A Telephone Line Company (TLC) is establishing a new telephone cable network. They are connecting several places numbered by integers from 1 to N. 阅读全文

摘要： 描述 When FJ's friends visit him on the farm, he likes to show them around. His farm comprises N (1 <= N <= 1000) fields numbered 1..N, the first of whi 阅读全文

摘要： 描述 Consider the two networks shown below. Assuming that data moves around these networks only between directly connected nodes on a peer-to-peer basis 阅读全文