#include<bits/stdc++.h>
#define int long long
using namespace std;
signed main(){
ios::sync_with_stdio(false);
cin.tie(nullptr);
int n, m;
cin >> n >> m;
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];
int sum[1<<m] = {0};
for (int p = 0; p < (1<<m); p++) {
for (int i = 0; i < m; i++) {
if ((p>>i)&1) sum[p] += b[i];
}
}
vector<int> yes, yes2;
yes.push_back(0);
for (int i = 0; i < n; i++) {
for (int p : yes) {
for (int q = 0; q < (1 << m); q++) {
if (!(p & q)) {
if (sum[q] == a[i]) {
yes2.push_back(p | q);
}
}
}
}
yes = yes2;
if (yes.empty()) break;
yes2.clear();
}
if (yes.empty()) cout << "NO\n";
else cout << "YES\n";
return 0;
}
