标签：acm
头文件：
import java.io.*;
BufferedReader in = new BufferedReader(new InputStreamReader(System.in)); PrintWriter out = new PrintWriter(System.out);
a = new Integer(in.readLine());
out.println("Hello!");
标签：acm
原文地址：http://blog.csdn.net/wty__/article/details/39637893
