import java.io.BufferedWriter;
import java.io.OutputStreamWriter;
public class Main {
public static void main(String[] args) throws Exception {
BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
BufferedWriter bw = new BufferedWriter(new OutputStreamWriter(System.out));
// bw.write中输出 `int` 是将值输出为两字节格式且用unicode编码,因此直接输出int会出现乱码
// 可以用String.valueOf()将int转化为String
bw.flush(); // 需要手动刷新缓冲区才能把write的内容刷新到输出流中
}
}