# include <bits/stdc++.h>
# define speed ios_base::sync_with_stdio(false);cin.tie(0);cout.tie(0)
# define int long long
# define fi first
# define se second
using namespace std;
const int N = 2e5 + 7;
const int mod = 1e9 + 7;
const int INF = 1e18 + 7;
int a[N], b[N], n, m;
string ans = "NO";
void rec( int i, int x, int mask ) {
if ( i == n + 1 ) {
ans = "YES";
return;
}
if ( x == 0 ) {
rec( i + 1, a[i + 1], mask );
return;
}
for ( int j = 0; j < m; j++ ){
if ( (mask >> j) & 1 ) {
if ( b[j] <= x ) {
rec( i, x - b[j], mask - (1 << j) );
}
}
}
}
int32_t main() {
speed;
cin >> n >> m;
for ( int i = 1; i <= n; i++ ) {
cin >> a[i];
}
for ( int i = 0; i < m; i++ ) {
cin >> b[i];
}
rec( 0, b[0], (1 << m)-1);
cout << ans;
}
