import java.util.Scanner; class MyQueue{ private int size; private int t1=0, t2=0; private int[] q; public MyQueue(int s){ this.size = s; this.q = new int[s]; } public void push(int x){ if(this.t2 == this.size-1){ System.out.println("error"); } else { this.q[t2++] = x; } } public void pop(){ if(t1&g...