#include <bits/stdc++.h>
using namespace std;
const int DIM = 1e3;
int main() {
ios_base::sync_with_stdio(0);
cin.tie(0);
int n, m;
cin >> n >> m;
vector<int> a(n + 1), b(m);
for ( int i = 1; i <= n; ++i ) cin >> a[i];
for ( int i = 0; i < m; ++i ) cin >> b[i];
vector<vector<int>> masks(1 + DIM, vector<int>());
for ( int mask = 0; mask < (1 << m); ++mask ) {
int val = 0;
for ( int i = 0; i < m; ++i ) {
if ( mask & (1 << i) ) {
val += b[i];
}
}
if ( val <= DIM ) {
masks[val].push_back(mask);
}
}
vector<vector<bool>> dp(2, vector<bool>(1 << m));
dp[0][0] = true;
for ( int i = 0; i < n; ++i ) {
for ( int mask = 0; mask < (1 << m); ++mask ) {
if ( !dp[i & 1][mask] ) continue;
for ( auto cand : masks[a[i + 1]] ) {
if ( (cand & mask) == 0 ) {
dp[(i & 1) ^ 1][mask ^ cand] = (dp[(i & 1) ^ 1][mask ^ cand] | dp[i & 1][mask]);
}
}
}
for ( int mask = 0; mask < (1 << m); ++mask ) {
dp[i & 1][mask] = false;
}
}
bool ok = false;
for ( int mask = 0; mask < (1 << m); ++mask ) {
ok |= dp[n & 1][mask];
}
cout << (ok ? "YES" : "NO");
return 0;
}
