Java 刷题模版

import java.io.*;
import java.util.*;

class Main {
    public static void main(String[] args) throws IOException {
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        PrintWriter pw = new PrintWriter(new BufferedOutputStream(System.out));
        StringTokenizer st = new StringTokenizer(br.readLine());

        pw.flush();
    }
}