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new InputStreamReader(System.in);new BufferedReader(new InputStreamReader(System.in));BufferedReader br=new BufferedReader(new InputStreamReader(System.in));InputStream in = System.in ;InputStreamReader isr = new InputStreamReader(in);BufferedReader br = new BufferedReader(isr);str=br.readLine();BufferedReader br=new BufferedReader(new InputStreamReader(System.in));
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原文地址：http://www.cnblogs.com/dolphin007/p/4452282.html
