#include <bits/stdc++.h>
#define X first
#define Y second
#define pb push_back
#define pii pair<int, int>
typedef long long ll;
using namespace std;
const int MOD = 1e9 + 7;
const ll INF = 1e18;
const int OFF = (1 << 20);
int n, m;
int a[22];
int b[22];
pair<int, int> dp[(1 << 20)+5];
int main () {
ios_base::sync_with_stdio(false);
cin.tie(0);
cin >> n >> m;
for (int i = 0; i < n; i++) cin >> a[i];
for (int i = 0; i < m; i++) cin >> b[i];
for (int mask = 0; mask < (1 << m); mask++) {
int pos = dp[mask].X;
int kol = dp[mask].Y;
if (pos == n) {
cout << "YES";
return 0;
}
for (int i = 0; i < m; i++) {
if ((mask&(1 << i)) == 0) {
if (kol+b[i] > a[pos]) continue;
if (kol+b[i] == a[pos]) dp[mask|(1 << i)] = max(dp[mask|(1 << i)], {pos+1, 0});
else dp[mask|(1 << i)] = max(dp[mask|(1 << i)], {pos, kol+b[i]});
}
}
}
cout << "NO";
return 0;
}
