#include "bits/stdc++.h"
using namespace std;
#ifdef LOCAL
#include "algo/debug"
#else
#define dbg(...)
#endif
#define int long long
void run() {
int n, m;
cin >> n >> m;
int a[n + 1], b[m + 1];
for (int i = 1; i <= n; i++) {
cin >> a[i];
}
for (int i = 1; i <= m; i++) {
cin >> b[i];
}
int sum[1 << m];
fill(sum, sum + (1 << m), 0);
for (int msk = 0; msk < 1 << m; msk++) {
for (int i = 0; i < m; i++) {
sum[msk] += (msk >> i & 1) * b[i + 1];
}
}
bool dp[n + 1][1 << m];
fill(&dp[0][0], &dp[0][0] + (n + 1) * (1 << m), false);
dp[0][0] = true;
for (int i = 1; i <= n; i++) {
for (int msk = 0; msk < 1 << m; msk++) {
for (int sub = msk; sub; sub = (sub - 1) & msk) {
if (sum[sub] == a[i]) {
dp[i][msk] |= dp[i - 1][msk ^ sub];
}
}
}
}
for (int msk = 0; msk < 1 << m; msk++) {
if (dp[n][msk]) {
cout << "YES\n";
return;
}
}
cout << "NO\n";
}
signed main() {
ios::sync_with_stdio(0);
cin.tie(nullptr);
int tt = 1;
// cin >> tt;
while (tt--) {
run();
}
}
