#include<bits/stdc++.h>
using namespace std;

int main()
{
	int number;
	cin>>number;
	int number2;
	cin>>number2;
	vector<int> arr1;
	vector<int> arr2;
	for(int i=0;i<number;i++)
	{
		int s;cin>>s;
		arr1.push_back(s);
	}
	for(int i=0;i<number2;i++)
	{
		int s;cin>>s;
		arr2.push_back(s);
	}
	sort(arr1.begin(),arr1.end());
	sort(arr2.begin(),arr2.end());
	int flag=0;
	for(int i=0;i<=number-number2;j++)
	{
		for(int j=0;j<number2;j++)
		{
			if(arr2[j]!=arr1[i+j])
			{
				break;
			}
		}
		flag=1;
		break;
	}
	if(flag==1)
	{
		cout<<"Yes";
	}
	else
	{
		cout<<"No";
	}
	return 0;
}