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; import java.lang.invoke.VarHandle; import java.lang.invoke.MethodHandles; class main { static class CachedPosterizer implements IPosterizer { IPosterizer posterizer; int[] cache; CachedPosterizer(IPosterizer posterizer) { this.posterizer = posterizer; makeCache(); } // 0..255 to 0..255 public int get(int brightness) { return cache[brightness]; } void makeCache() { cache = new int[256]; for (int brightness = 0; brightness < 256; brightness++) cache[brightness] = posterizer.get(brightness); } } interface IPosterizer extends IF1_IntToInt {} static interface IF1_IntToInt { int get(int i); } }