#include <iostream>
#include <vector>
using namespace std;
#define int int64_t
signed main() {
ios_base::sync_with_stdio(false);
cin.tie(NULL);
int n, m;
if (!(cin >> n >> m)) {
return 0;
}
vector<int> a(n);
for (int i = 0; i < n; i++) {
cin >> a[i];
}
vector<int> b(m);
for (int i = 0; i < m; i++) {
cin >> b[i];
}
vector<int> p_cov(1 << m, -1);
vector<int> left(1 << m, -1);
p_cov[0] = 0;
left[0] = 0;
for (int mask = 0; mask < (1 << m); mask++) {
if (p_cov[mask] == -1) {
continue;
}
for (int i = 0; i < m; i++) {
if (!(mask & (1 << i))) {
int n_mask = mask | (1 << i);
int cur_p = p_cov[mask];
if (cur_p == n) {
continue;
}
int tar = a[cur_p];
int n_left = left[mask] + b[i];
if (n_left < tar) {
p_cov[n_mask] = cur_p;
left[n_mask] = n_left;
}
if (n_left == tar) {
p_cov[n_mask] = cur_p + 1;
left[n_mask] = 0;
}
}
}
}
bool ok = false;
for (int mask = 0; mask < (1 << m); mask++) {
if (p_cov[mask] == n) {
ok = true;
break;
}
}
if (ok) {
cout << "YES\n";
} else {
cout << "NO\n";
}
return 0;
}
