import java.util.*;
import java.util.zip.*;
import java.util.List;
import java.util.regex.*;
import java.util.concurrent.*;
import java.util.concurrent.atomic.*;
import java.util.concurrent.locks.*;
import javax.swing.*;
import javax.swing.event.*;
import javax.swing.text.*;
import javax.swing.table.*;
import java.io.*;
import java.net.*;
import java.lang.reflect.*;
import java.lang.ref.*;
import java.lang.management.*;
import java.security.*;
import java.security.spec.*;
import java.awt.*;
import java.awt.event.*;
import java.awt.image.*;
import javax.imageio.*;
import java.math.*;
class main {

static <A, B> AutoCloseable tempRemove(Map<A, B> map, A key) {
  if (map == null || !map.containsKey(key)) return null;
  B b = map.get(key);
  map.remove(key);
  return new AutoCloseable() { public String toString() { return "map.put(key, b);"; } public void close() throws Exception { map.put(key, b); }};
}}