#include <bits/stdc++.h>
using namespace std;
#ifdef LOCAL
#include "debug.h"
#else
#define dbg(...) 42
#endif
int main() {
ios::sync_with_stdio(false);
cin.tie(nullptr);
int n, m;
cin >> n >> m;
vector<int> a(n + 1), b(m);
for (int i = 1; i <= n; i++) {
cin >> a[i];
}
for (int i = 0; i < m; i++) {
cin >> b[i];
}
vector<pair<int, int>> dp(1 << m, {-1, -1});
dp[0] = {0, 0};
for (int s = 0; s < (1 << m); s++) {
for (int i = 0; i < m; i++) {
if (s & (1 << i)) continue;
auto [id, x] = dp[s];
if (id >= n) continue;
if (x + b[i] == a[id + 1]) {
dp[s | (1 << i)] = {id + 1, 0};
}
else {
if (x + b[i] <= a[id + 1]) {
dp[s | (1 << i)] = {id, x + b[i]};
}
}
}
}
for (int s = 0; s < (1 << m); s++) {
if (dp[s].first == n) {
cout << "YES" << endl;
return 0;
}
}
cout << "NO" << endl;
return 0;
}
