Java版本icpc

import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.Scanner;

public class Main{
	public static Scanner cin=new Scanner(new BufferedInputStream(System.in));
	public static PrintWriter cout=new PrintWriter(new BufferedOutputStream(System.out));
	
	public static void fileIn(){
		try {
			cin=new Scanner(new FileReader("A.in"));
			cout=new PrintWriter(new FileWriter("A.out"));
		} catch (IOException e) {
			e.printStackTrace();
		}
	}
	public static void closeAll(){
		cin.close();
		cout.close();
		System.exit(0);
	}
	public static void main(String[] args) {
		
	}
}