题目链接:http://codeforces.com/problemset/problem/215/B Description The World Programming Olympics Medal is a metal disk, consisting of two parts: the first part is a ring with outer radius of r1 cm, inner radius of r2 cm, (0 < r2 < r1) made of metal wi…
Olympic Class Ships You probably know about the Titanic, but it was actually just noe of three state-of-the art ocean ships back in the day. 你可能知道泰坦尼克号,但它实际上是当时最先进的三艘远洋船只之一. The Olympic class ships were built by the Harland & Wolff ship makers in Nor…
A. Tennis Tournament time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output A tennis tournament with n participants is running. The participants are playing by an olympic system, so the winners mo…