#include <bits/stdc++.h>
using namespace std;
#pragma GCC optimize("Ofast")
#pragma GCC optimize("unroll-loops")
typedef long long ll;
const ll INF = 1e18;
const ll MOD = 1e9 + 7;
const ll MAXN = 2e6 + 5;
const ll LOG = 30;
#define vll vector <ll>
#define pll pair <ll, ll>
#define fi first
#define se second
#define endl '\n'
#define debug(x) cout << #x << " " << (x) << endl;
ll n, m;
ll a [30], b [30];
bool dp [30][MAXN];
int main(){
ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
cin >> n >> m;
for(ll i = 0; i < n; i++){
cin >> a[i];
}
for(ll i = 0; i < m; i++){
cin >> b[i];
}
ll tot = (1<<m);
for(ll i = 0; i < n; i++){
for(ll j = 0; j < tot; j++){
// debug(j)
for(ll k = j; k > 0; k = (k-1) & j){
// debug(k)
ll cnt = 0;
for(ll o = 0; o < m; o++){
if((j>>o) & 1 && !((k>>o) & 1)){
cnt += b[o];
}
}
if(cnt == a[i]){
if(i) dp[i][j] |= dp[i-1][k];
}
}
ll cnt = 0;
for(ll o = 0; o < m; o++){
if((j>>o) & 1){
cnt += b[o];
}
}
if(cnt == a[i]){
if(i) dp[i][j] |= dp[i-1][0];
else dp[i][j] = 1;
}
// cout << i << " << ";
// for(ll o = 0; o < m; o++){
// cout << ((j>>o) & 1);
// }
// cout << " << " << dp[i][j] << endl;
}
}
ll ans = 0;
for(ll i = 0; i < tot; i++) ans |= dp[n-1][i];
if(ans) cout << "YES" << endl;
else cout << "NO" << endl;
}
