sun.misc
PKU1000
import java.util.Scanner; import sun.misc.Queue; class Main{ public static void main(String[] args) throws Exception{ Scanner cin = new Scanner(System.in); Queue q = new Queue(); q.enqueue(cin.nextInt()); q.enqueue(cin.nextInt()); System.out.println(((Integer)q.dequeue()) + ((Integer)q.dequeue())); } }