#include <iostream>
#include <vector>
using namespace std;
int a[25];
int b[25];
bool o[21][(1<<20)];
vector<int> gr[21];
void dfs(int n, int m, int ix, int ob)
{
if (ix == n)
{
cout << "YES\n";
exit(0);
}
if (o[ix][ob])
return;
o[ix][ob] = true;
for (auto pr : gr[ix])
if ((ob&pr) == 0)
dfs(n, m, ix+1, ob|pr);
return;
}
int main()
{
int n, m;
cin >> n >> m;
for (int i = 0; i < n; i++)
cin >> a[i];
for (int i = 0; i < m; i++)
cin >> b[i];
for (int op = 0; op < (1<<m); op++)
{
int vs = 0;
for (int i = 0; i < m; i++)
if ((1<<i)&op)
vs += b[i];
for (int i = 0; i < n; i++)
if (vs == a[i])
gr[i].push_back(op);
}
dfs(n, m, 0, 0);
cout << "NO" << "\n";
return 0;
}
