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 int reverseBits(int i) { return reverseBits(i, 32); } static int reverseBits(int i, int bits) { int j = 0; for (int _repeat_0 = 0; _repeat_0 < bits; _repeat_0++) { j = (j << 1) | (i & 1); i >>>= 1; } return j; }}