摘要：
[题目传送门] -----------------------> http://www.codeforces.com/problemset/problem/608/B[题目]Genos needs your help. He was asked to solve the following prog... 阅读全文
摘要：
[题目传送门] ---------------> http://codeforces.com/problemset/problem/608/C[题目] There are n beacons located at distinct positions on a number line. The i... 阅读全文