#include <iostream>
using namespace std;
int main()
{
int n, m;
cin >> n >> m;
auto a = new int[n];
auto b = new int[m];
auto dp = new int[1005];
for (int i = 0; i < n; i++)
{
cin >> a[i];
}
for (int i = 0; i < m; i++)
{
cin >> b[i];
}
for (int i = 1; i < 1005; i++)
{
dp[i] = -1;
}
dp[0] = 0;
for (int j = 0; j < m; j++)
{
for (int i = 1004; i > 0; i--)
{
if (i < b[j])
{
continue;
}
if (dp[i - b[j]] == -1)
{
continue;
}
if (dp[i] == -1)
{
dp[i] = dp[i - b[j]] + 1;
}
else if (dp[i] > dp[i - b[j]] + 1)
{
dp[i] = dp[i - b[j]] + 1;
}
}
}
for (int i = 0; i < 1000; i++)
{
cout << "DP[] " << i << ' ' << dp[i] << '\n';
}
bool p = true;
for (int i = 0; i < n; i++)
{
if (dp[a[i]] == -1)
{
p = false;
break;
}
}
if (p)
{
cout << "YES\n";
}
else
{
cout << "NO\n";
}
}
