#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
int main(){
int n, m;
cin >> n >> m;
vector<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];
vector<pair<ll, ll>> s(1 << m);
vector<ll> check(1 << m);
check[0] = 1;
bool ok = false;
for (int i = 0; i < (1 << m) - 1; ++i){
if (check[i] == 0) continue;
for (int j = 0; j < m; ++j){
if (i & (1 << j)) continue;
int k = s[i].first, val = s[i].second;
val += b[j];
if (a[k] == val){
check[i | (1 << j)] |= 1;
s[i | (1 << j)] = {k + 1, 0};
}
else if (a[k] > val){
check[i | (1 << j)] |= 1;
s[i | (1 << j)] = {k, val};
}
}
}
for (int i = 0; i < (1 << m); ++i){
if (s[i].first == n)
ok = true;
}
if (ok) cout << "YES\n";
else cout << "NO\n";
return 0;
}
