# 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;
vector < int > vc[N];
string ans = "NO";
void rec( int i, int mask ) {
if ( i == n + 1 ) {
ans = "YES";
cout << "YES";
exit(0);
}
for ( auto msk: vc[i] ) {
if ( (msk & mask) == 0 ) {
rec( i + 1, msk | mask );
return;
}
}
}
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];
}
for ( int i = 1; i <= n; i++ ) {
for ( int mask = 0; mask < (1 << m); mask++ ) {
int cnt = 0;
for ( int j = 0; j < m; j++ ) {
if ( (mask >> j) & 1 ) {
cnt += b[j];
}
}
if ( cnt == a[i] ) {
vc[i].push_back(mask);
}
}
}
rec(1, 0);
cout << ans;
}
/*
2 4
9 11
9 4 2 5
*/
