A. Jabber ID time limit per test 0.5 second memory limit per test 256 megabytes input standard input output standard output Jabber ID on the national Berland service ?Babber? has a form
题目连接:http://codeforces.com/contest/21/problem/A 题目大意:判断字符串是否符合要求 题目思路:直接处理字符串 A. Jabber ID time limit per test 2 seconds memory limit per test 64 megabytes input standard input output