# 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 = 2e6 + 7;
const int mod = 1e9 + 7;
int n, m, a[23], b[23];
vector < int > vc[23];
bool dp[23][N], used[23][N];
void rec( int i, int mask ) {
if ( i < 0 ) {
cout << "YES";
exit(0);
}
if ( used[i][mask] ) {
return;
}
used[i][mask] = 1;
for ( auto msk: vc[ i ] ) {
if ( (mask & msk) == msk ) {
rec( i - 1, (mask ^ msk) );
}
}
}
int32_t main() {
speed;
cin >> n >> m;
for ( int i = 0; i < n; i++ ) {
cin >> a[i];
}
for ( int j = 0; j < m; j++ ) {
cin >> b[j];
}
for ( int i = 0; i < n; i++ ) {
for ( int mask = 0; mask < (1 << m); mask++ ) {
int sum = 0;
for ( int bit = 0; bit < m; bit++ ) {
if ( (mask >> bit) & 1 ) {
sum += b[bit];
}
}
if ( sum == a[i] ) {
vc[i].push_back(mask);
// cout << a[i] << ' ' << mask << endl;
}
}
}
rec( n - 1, (1 << (m)) - 1 );
cout << "NO";
}
