You are given array a with n elements and the number m. Consider some subsequence of a and the value of least common multiple (LCM) of its elements. Denote LCM as l. Find any longest subsequence of a with the value l ≤ m.

A subsequence of a is an array we can get by erasing some elements of a. It is allowed to erase zero or all elements.

The LCM of an empty array equals 1.

Input

The first line contains two integers n and m (1 ≤ n, m ≤ 106) — the size of the array a and the parameter from the problem statement.

The second line contains n integers ai (1 ≤ ai ≤ 109) — the elements of a.

Output

In the first line print two integers l and kmax (1 ≤ l ≤ m, 0 ≤ kmax ≤ n) — the value of LCM and the number of elements in optimal subsequence.

In the second line print kmax integers — the positions of the elements from the optimal subsequence in the ascending order.

Note that you can find and print any subsequence with the maximum length.

Examples

Input

7 8
6 2 9 2 7 2 3


Output

6 5
1 2 4 6 7


Input

6 4
2 2 2 3 3 3


Output

2 3
1 2 3
import java.io.*;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.StringTokenizer;
import java.util.List;
 import java.util.*;
 public class realfast implements Runnable 
  {
    private static final int INF = (int) 1e9;
    long in= 998244353;
    long fac[]= new long[3000];
    public  void solve() throws IOException 
    {
      int n = readInt();
      int m = readInt();
      int arr[]= new int[n+1];
      int count[]= new int [m+1];
      for(int i =0;i<n;i++)
      {

        int a = readInt();
        arr[i+1]=a;
        if(a<=m)
            count[a]++;
      } 
      int ans[]= new int[m+1];
      for(int i =1;i<=m;i++)
      {
        if(count[i]!=0)
        {
            for(int j =i;j<=m;j=j+i)
            {
                ans[j]= ans[j]+count[i];
            }
        }
      }

    int val =1;
    int cnt=0;

     for(int i=1;i<=m;i++)
     {
        if(ans[i]>cnt)
        {
            cnt =ans[i];
            val=i;
            //out.println(i);
        }
     }
     out.println(val+" "+cnt);
     for(int i=1;i<=n;i++)
        if(val>0&&val%arr[i]==0)
            out.print(i+" ");
    }
    public int build(int seg[] , int left, int right , int index , int sum[])
    {
             if(left==right)
             {
                seg[index]= sum[left];
                return seg[index];
             }
             int mid = left +(right-left)/2;
             int left1 = build(seg, left,mid,2*index+1,sum);
             int right1 = build(seg,mid+1,right, 2*index+2,sum);
             seg[index]=Math.max(left1,right1);
             return seg[index];
    }
    public int value (int seg[], int left , int right ,int index, int l, int r)
    {
            
            if(left>right)
            {
              return -100000000;
            }
            if(right<l||left>r)
                return -100000000;
            if(left>=l&&right<=r)
                return seg[index];
            int mid = left+(right-left)/2;
            int val = value(seg,left,mid,2*index+1,l,r);
            int val2 = value(seg,mid+1,right,2*index+2,l,r);
            return Math.max(val,val2);

    }
   
    public int gcd(int a , int b )
    {
      if(a<b)
      {
        int t =a;
        a=b;
        b=t;
      }
      if(a%b==0)
        return b ;
      return gcd(b,a%b);
    }
    public long pow(long n , long p,long m)
    {
         if(p==0)
            return 1;
        long val = pow(n,p/2,m);;
        val= (val*val)%m;
        if(p%2==0)
            return val;
        else
            return (val*n)%m;
    }
    
    
    ///////////////////////////////////////////////////////////////////////////////////////////////////////////////////
    public static void main(String[] args) {
        new Thread(null, new realfast(), "", 128 * (1L << 20)).start();
    }
 
    private static final boolean ONLINE_JUDGE = System.getProperty("ONLINE_JUDGE") != null;
    private BufferedReader reader;
    private StringTokenizer tokenizer;
    private PrintWriter out;
 
    @Override
    public void run() {
        try {
            if (ONLINE_JUDGE || !new File("input.txt").exists()) {
                reader = new BufferedReader(new InputStreamReader(System.in));
                out = new PrintWriter(System.out);
            } else {
                reader = new BufferedReader(new FileReader("input.txt"));
                out = new PrintWriter("output.txt");
            }
            solve();
        } catch (IOException e) {
            throw new RuntimeException(e);
        } finally {
            try {
                reader.close();
            } catch (IOException e) {
                // nothing
            }
            out.close();
        }
    }
 
    private String readString() throws IOException {
        while (tokenizer == null || !tokenizer.hasMoreTokens()) {
            tokenizer = new StringTokenizer(reader.readLine());
        }
        return tokenizer.nextToken();
    }
 
    @SuppressWarnings("unused")
    private int readInt() throws IOException {
        return Integer.parseInt(readString());
    }
 
    @SuppressWarnings("unused")
    private long readLong() throws IOException {
        return Long.parseLong(readString());
    }
 
    @SuppressWarnings("unused")
    private double readDouble() throws IOException {
        return Double.parseDouble(readString());
    }
}
class edge implements Comparable<edge>{
    int val ;
    int color;
    
    edge(int u, int v)
    {
       this.val=u;
       this.color=v;
    }
    public int compareTo(edge e)
    {
        return this.val-e.val;
    }
}