#include "bits/stdc++.h"
using namespace std;
int main() {
ios_base::sync_with_stdio(0);
cin.tie(0);
int n, m;
cin >> n >> m;
vector<int> a(n + 1, 0), b(m);
for (int i = 0; i < n; i++) cin >> a[i];
for (int i = 0; i < m; i++) cin >> b[i];
vector<int> sum(n + 1, 0);
for (int i = 1; i <= n; i++) sum[i] = a[i - 1] + sum[i - 1];
int dp[1 << m];
memset(dp, 0, sizeof dp);
for (int i = 0; i < 1 << m; i++) {
int cursum = 0;
for (int j = 0; j < m; j++)
if (i & (1 << j))
cursum += b[j];
cursum -= sum[dp[i]];
for (int j = 0; j < m; j++)
if (!(i & (1 << j))) {
if (cursum + b[j] < a[dp[i]])
dp[i | (1 << j)] = max(dp[i | (1 << j)], dp[i]);
if (cursum + b[j] == a[dp[i]])
dp[i | (1 << j)] = max(dp[i | (1 << j)], dp[i] + 1);
}
}
for (int i = 0; i < 1 << m; i++)
if (dp[i] == n) {
cout << "YES\n";
return 0;
}
cout << "NO\n";
}
