第二题大概这样，没数据测试了 import java.util.*;  public class Main {      private static int count = 0;      public static void main(String[] args) {          Scanner sc = new Scanner(System.in);          int num1= sc.nextInt();          int[] arr=new int [num1];          int key=0;         kk: for (int i = 0; i < num1; i++)                  if(sc.nextInt()==1) {                  arr[key]=sc.nextInt();                  key++;                  }              else {                 int a=0;                  int aa=sc.nextInt();                 for (int j = 0; j < key; j++)                      {                         if((arr[j]|aa)==aa)                             a=a|arr[j];                         if(a==aa)                         {                             System.out.println("YES");                             continue kk;                         }                     }                     System.out.println("NO");                      }          }