Java输入输出挂

import java.util.Comparator;
import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.io.PrintWriter;
import java.util.StringTokenizer;
public class Main {
      static class FastScanner{//快速输入
          BufferedReader br;
          StringTokenizer st;
          public FastScanner(InputStream in) {
            br = new BufferedReader(new InputStreamReader(in),16384);
            eat("");
          }
          public void eat(String s) {
            st = new StringTokenizer(s);
          }
          public String nextLine() {
            try {
                return br.readLine();
            } catch (IOException e) {
                return null;
            }
          }
          public boolean hasNext() {
            while(!st.hasMoreTokens()) {
                String s = nextLine();
                if(s==null) return false;
                eat(s);
            }
            return true;
          }
          public String next() {
            hasNext();
            return st.nextToken();
          }
          public int nextInt() {
            return Integer.parseInt(next());
          }
      }
      static FastScanner scan = new FastScanner(System.in);//输入
      static PrintWriter out = new PrintWriter(new BufferedWriter(new OutputStreamWriter(System.out)));//输出
      public static void main(String[] args) {
            int shuru=scan.nextInt();
            out.println("shuchu");
            out.flush();
    }
}