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 java.util.function.*;
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 java.awt.geom.*;
import javax.imageio.*;
import java.math.*;
import java.time.Duration;
class main {

static class IVF1WithToString<A> implements IVF1<A> , IFieldsToList{
  static final String _fieldOrder = "toString f";
  String toString;
  IVF1<A> f;
  IVF1WithToString() {}
  IVF1WithToString(String toString, IVF1<A> f) {
  this.f = f;
  this.toString = toString;}

public boolean equals(Object o) {
if (!(o instanceof IVF1WithToString)) return false;
    IVF1WithToString __1 =  (IVF1WithToString) o;
    return eq(toString, __1.toString) && eq(f, __1.f);
}

  public int hashCode() {
    int h = 574155786;
    h = boostHashCombine(h, _hashCode(toString));
    h = boostHashCombine(h, _hashCode(f));
    return h;
  }
  public Object[] _fieldsToList() { return new Object[] {toString, f}; }

  public void get(A a) {
    f.get(a);
  }
  
  public String toString() { return toString; }
}

static <A> IVF1<A> ivf1WithToString(String toString, IVF1<A> f) {
  return f == null ? null : new IVF1WithToString<A>(toString, f);
}
static boolean eq(Object a, Object b) {
  return a == b || a != null && b != null && a.equals(b);
}




static int boostHashCombine(int a, int b) {
  return a ^ (b + 0x9e3779b9 + (a << 6) + (a >>> 2));
  
  // OLD (changed) 2022/3/10: ret a ^ (b + 0x9e3779b9 + (a << 6) + (a >> 2));
}


static int _hashCode(Object a) {
  return a == null ? 0 : a.hashCode();
}




static String str(Object o) {
  return o == null ? "null" : o.toString();
}

static String str(char[] c) {
  return new String(c);
}

static String str(char[] c, int offset, int count) {
  return new String(c, offset, count);
}




static interface IFieldsToList {
  Object[] _fieldsToList();
}
static interface IVF1<A> {
  void get(A a);
}

}