/* package whatever; // don't place package name! */
 
import java.util.*;
import java.lang.*;
import java.io.*;
 
/* Name of the class has to be "Main" only if the class is public. */
class Ideone
{
	static class MyPrintStream extends PrintStream {
		MyPrintStream(PrintStream out) {
			super(out);
		}
		public void println(String x) {
			printf("Haha <%s>\n", x);
		}
	}
	public static void main (String[] args) throws java.lang.Exception {
		System.setOut(new MyPrintStream(System.out));
 
		System.out.println("Hello World");
	}
}

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