#include <bits/stdc++.h>
using namespace std;
using ll = long long;
int main(){
ios::sync_with_stdio(false);
cin.tie(nullptr);
// freopen("template.in", "r", stdin);
// freopen("template.out", "w", stdout);
ll n, m; cin >> n >> m;
vector<ll> a(n), b(m); for (ll i = 0; i < n; ++i){cin >> a[i];} for (ll i = 0; i < m; ++i){cin >> b[i];}
vector<ll> done(1 << m, -1); vector<ll> left(1 << m, -1);
done[0] = 0; left[0] = 0;
for (ll s = 1; s < (1 << m); ++s){
for (ll i = 0; i < m; ++i){
if (!(s & (1 << i))){continue;}
ll k = s - (1 << i);
if (left[k] + b[i] == a[done[k]]){
if (done[k] > done[s]){
done[s] = done[k] + 1;
left[s] = 0;
}
}
else {
if (done[k] > done[s]){
done[s] = done[k];
left[s] = left[k] + b[i];
}
}
}
if (done[s] == n){
cout << "YES"; return 0;
}
}
cout << "NO";
}
