#include <bits/stdc++.h>
using namespace std;
using lli = long long;
int main() {
ios_base::sync_with_stdio(0); cin.tie(0);
int n, m;
cin >> n >> m;
vector <int> a(n);
for (int i = 0; i < n; ++i) cin >> a[i];
vector <int> b(m);
for (int i = 0; i < m; ++i) cin >> b[i];
vector <int> paid(1 << m, -1), left_over(1 << m, -1);
paid[0] = left_over[0] = 0;
for (int mask = 0; mask < (1 << m); ++mask) {
if (paid[mask] == -1) continue;
for (int i = 0; i < m; ++i) {
if ((mask >> i) & 1) continue;
int nxt = paid[mask];
int new_amount = left_over[mask] + b[i];
if (new_amount < a[nxt]) {
paid[mask | (1 << i)] = paid[mask];
left_over[mask | (1 << i)] = new_amount;
} else if (new_amount == a[nxt]) {
paid[mask | (1 << i)] = paid[mask] + 1;
left_over[mask | (1 << i)] = 0;
}
}
if (paid[mask] == n) {
cout << "YES" << '\n';
return 0;
}
}
cout << "NO" << '\n';
return 0;
}
