#include <bits/stdc++.h>
using namespace std;
int n, m, a[22], b[22];
vector<int>Masks[22];
void backt (int k, int mask) {
if (k == n + 1) {
cout << "YES\n";
exit(0);
}
for (auto it : Masks[k]) {
if (mask & it)
continue;
backt(k + 1, mask | it);
}
return;
}
int main()
{
cin >> n >> m;
for (int i = 1; i <= n; i++)
cin >> a[i];
for (int j = 0; j < m; j++)
cin>> b[j];
for (int mask = 0; mask < (1 << m); mask++) {
int sum = 0;
for (int j = 0; j < m; j++)
if (mask & (1 << j))
sum += b[j];
for (int i = 1; i <= n; i++)
if (sum == a[i])
Masks[i].push_back(mask);
}
backt(1, 0);
cout << "NO\n";
return 0;
}
