ducquoc

//import java.io.*; import java.util.*;

/**
 * Delegate quick Scanner. Example usage: <pre>QScanner scanner = new QScanner(System.in);</pre>
 */
@SuppressWarnings({"unused", "Duplicates"}) //noinspection Duplicates
public class QScanner {
    java.io.BufferedReader br; java.util.StringTokenizer st;

    public QScanner() { br = new java.io.BufferedReader(new java.io.InputStreamReader(System.in)); }