#ifdef ONPC
#define _GLIBCXX_DEBUG
#endif // ONPC
#include <bits/stdc++.h>
using namespace std;
#define all(v) begin(v), end(v)
using ll = long long;
const int inf = (int)1e9 + 10;
const ll INF = (ll)1e18 + 10;
const int mod = 1e9 + 7;
void test_case() {
int n, m;
cin >> n >> m;
vector<ll> a(n), b(m);
for (auto &i : a) {
cin >> i;
}
for (auto &i : b) {
cin >> i;
}
vector<pair<ll, ll>> dp(1 << m);
for (int mask = 0; mask < (1 << m); ++mask) {
for (int i = 0; i < m; ++i) {
if (mask >> i & 1) {
auto [pref, sum] = dp[mask ^ (1 << i)];
if (pref == n) {
dp[mask] = max(dp[mask], make_pair(pref, sum + b[i]));
} else {
if (sum + b[i] == a[pref]) {
dp[mask] = max(dp[mask], make_pair(pref + 1, sum + b[i] - a[pref]));
} else {
dp[mask] = max(dp[mask], make_pair(pref, sum + b[i]));
}
}
}
}
}
cout << (dp.back().first == n ? "YES" : "NO") << '\n';
}
int main() {
ios::sync_with_stdio(false);
cin.tie(0);
int t = 1;
// cin >> t;
while (t--) {
test_case();
}
return 0;
}