摘要：Problem DescriptionThe galaxy war between the Empire Draco and the Commonwealth of Zibu broke out 3 years ago. Draco established a line of defense called Grot. Grot is a straight line withNdefense stations. Because of the cooperation of the stations, Zibu’s Marine Glory cannot march any further but 阅读全文

摘要：Problem DescriptionYou are given n closed, integer intervals [ai, bi] and n integers c1, ..., cn.Write a program that:reads the number of intervals, their end points and integers c1, ..., cn from the standard input,computes the minimal size of a set Z of integers which has at least ci common element 阅读全文