#include <bits/stdc++.h>
using namespace std;
#define debug(x) cerr << #x << ' ' << x << '\n';
int n, m, a[25], b[25], sum[1 << 20];
bool dp[1 << 20][20];
vector <int> adj[25];
signed main () {
ios_base::sync_with_stdio(0);
cin.tie(0);
cout.tie(0);
cin >> n >> m;
for (int i = 1; i <= n; i++)
cin >> a[i];
for (int i = 0; i < m; i++)
cin >> b[i];
for (int mask = 0; mask < (1 << m); mask++)
for (int i = 0; i < m; i++)
if (mask >> i & 1) sum[mask] += b[i];
for (int i = 1; i <= n; i++)
for (int mask = 1; mask < (1 << m); mask++)
if (sum[mask] == a[i]) adj[i].push_back (mask);
dp[0][0] = true;
for (int i = 1; i <= n; i++) {
for (int mask = 1; mask < (1 << m); mask++) {
for (int sub : adj[i]) {
if ((mask | sub) != mask) continue;
if (dp[mask ^ sub][i - 1]) {
dp[mask][i] = true;
break;
}
}
if (i == n && dp[mask][i]) {
cout << "YES";
return 0;
}
}
}
cout << "NO";
}
