#include <algorithm>
#include <iostream>
#include <vector>
using namespace std;
typedef long long ll;
ll n, m;
void solve(ll mask, ll curr, vector<vector<ll>> &sums, vector<ll> &a) {
if (curr == n) {
cout << "YES\n";
exit(0);
}
for (ll &i: sums[a[curr]]) {
if (mask & i) continue;
solve(mask | i, curr + 1, sums, a);
}
}
signed main() {
cin.tie(0)->sync_with_stdio(0);
cin >> n >> m;
vector<ll> a(n), b(m);
ll mx = 0;
if (n > m) {
cout << "NO\n";
return 0;
}
for (ll &i: a) cin >> i;
for (ll &i: b) {
cin >> i;
mx += i;
}
vector<vector<ll>> sums(mx + 1);
for (ll i = 0; i<(1 << m); ++i) {
ll curr = 0;
for (ll j = 0; j<m; ++j) {
if ((1 << j) & i) curr += b[j];
}
sums[curr].push_back(i);
}
for (ll i = 0; i<n; ++i) {
if (sums[a[i]].empty()) {
cout << "NO\n";
return 0;
}
}
solve(0, 0, sums, a);
cout << "NO\n";
}
