#include <bits/stdc++.h>
using namespace std;
#define ar array
#define ll long long
const int inf = 2e9;
void solve() {
int n, m;
cin >> n >> m;
vector<int> a(n), b(m);
for (int i = 0; i < n;i++)
cin >> a[i];
for (int i = 0; i < m;i++)
cin >> b[i];
vector<vector<int>> f(n);
for (int i = 0; i < n;i++) {
for (int mask = 0; mask < (1 << m);mask++) {
int sum = 0;
for (int j = 0; j < m;j++)
if (mask >> j & 1)
sum += b[j];
if (sum == a[i])
f[i].push_back(mask);
}
}
vector<vector<int>> dp(n, vector<int> (1 << m, 0));
for (int x : f[0]) dp[0][x] = 1;
for (int i = 1; i < n;i++) {
for (int mask = 0; mask < (1 << m); mask++) {
for (int x : f[i]) {
if (!(mask & x)) {
dp[i][mask | x] |= dp[i - 1][mask];
}
}
}
}
for (int mask = 0; mask < (1 << m);mask++)
if (dp[n - 1][mask])
return (void)(cout << "YES");
cout << "NO";
}
int32_t main() {
#ifdef Behruz
freopen("input.txt", "r", stdin);
freopen("output.txt", "w", stdout);
#endif
ios :: sync_with_stdio(false);
cin.tie(nullptr);
cout.tie(nullptr);
solve();
return 0;
}
