#include <iostream>
using namespace std;
int main()
{
    int n , m , x , tedad;
    cin >> n >> m;
    tedad = 0;
    x = 0;
    int bozorg[n] , kuchik[m] , arr[n];

    for ( int i = 0 ; i < n ; i ++ )
    {
        cin >> bozorg[i];
    }

    for ( int i = 0 ; i < m ; i ++ )
    {
        cin >> kuchik[i];
    }

    for ( int i = 0 ; i < n ; i ++ )
    {
        arr[i] = 0;
    }

    for ( int i = 0 ; i < m ; i ++ )
    {
        for ( int y = 0 ; y < n ; y ++ )
        {
            if ( kuchik[i] == bozorg[y] && x <= i )
            {
                arr[y] = 1;
                x ++;
            }
        }
    }

    for ( int a = 0 ; a < n ; a ++ )
    {
        if ( arr[a] == 1 )
        {
            tedad ++;
        }
    }

    if ( tedad == m )
    {
        cout << "Yes";
    }

    else
    {
        cout << tedad;
    }


    return 0;
}