#include <iostream>

using namespace std;

int main()
{ 
	long long n , m;
	cin >> n >> m;
	long long arr[n];
	int arr1[m];
	for (int i = 0; i < n; ++i)
	{
		cin >> arr[i];
	}
	for (int i = 0; i < m; ++i)
	{
		cin >> arr1[i];
	}
	
	for (int i = 0; i + m <= n; ++i)
	{
		int x = i + m;
		int a = 0;
		int z = 0;
		for (int j = i; j < x; ++j)
		{
			if (arr[j] == arr1[a])
			{
				z = z + 1;
			}
			a++;
			
		}
		if ( z == m)
		{
			cout << "Yes";
			return 0;
		}
		
	}	

	
	cout << "No";
	
	return 0;
}