#include <bits/stdc++.h>
#define int long long
#define ll long long
#define ld long double
#define ull unsigned long long
#define endl '\n'
#define NF string::npos
#define all(v) v.begin(), v.end()
#define allr(v) v.rbegin(), v.rend()
#define FAST ios_base::sync_with_stdio(false), cin.tie(nullptr), cout.tie(nullptr)
using namespace std;
const int N = 1e7 + 5;
const int mod = 1e9 + 7;
int dx[] = {1, -1, 0, 0};
int dy[] = {0, 0, 1, -1};
signed main()
{
FAST;
int n, m; cin >> n >> m;
vector <int> a(n);
multiset <int, greater <int> > st1, st2;
for(int i = 0; i < n; i++) cin >> a[i];
for(int i = 0; i < m; i++)
{
int x; cin >> x;
st1.insert(x);
}
bool ok = 1;
for(int i = 0; i < n; i++)
{
bool x = 0;
for(auto it = st1.begin(); it != st1.end(); it++)
{
int z = 0;
if(z + *it <= a[i])
{
for(auto it2 = it; it2 != st1.end(); it2++)
{
if(z + *it2 <= a[i]) z += *it2;
else st2.insert(*it2);
}
}
if(z == a[i])
{
x = 1;
break;
}
st2.clear();
}
if(!x)
{
ok = 0;
break;
}
st1 = st2;
st2.clear();
}
cout << (ok ? "YES" : "NO") << endl;
return 0;
}
