#include<iostream>
#include<iomanip>
#include<algorithm>
#include<stack>
#include<queue>
#include<string>
#include<string.h>
#include<cmath>
#include<vector>
#include<map>
#include<unordered_map>
#include<set>
#include<unordered_set>
#include<cstdio>
#include<bitset>
#include<chrono>
#include<random>
#include<ext/rope>
/* ordered_set
#include<ext/pb_ds/assoc_container.hpp>
#include<ext/pb_ds/tree_policy.hpp>
using namespace __gnu_pbds;
#define ordered_set tree<int, null_type,less<int>, rb_tree_tag,tree_order_statistics_node_update>
*/
#define pb push_back
#define fi first
#define se second
using namespace std;
using ll = long long;
using ld = long double;
using ull = unsigned long long;
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
const int maxN = 20 + 5;
const int mod = 1e9 + 7;
const ll oo = 1e18;
int n, m, a[maxN], b[maxN];
int f[maxN][1 << 20];
int mask[1 << 20];
void ReadInput()
{
cin >> n >> m;
for(int i=1; i<=n; i++) cin >> a[i];
for(int i=1; i<=m; i++) cin >> b[i];
}
void Solve()
{
f[0][0] = 1;
for(int i=1; i<=n; i++)
{
vector<int> vc, vc1;
for(int mask=0; mask<(1<<m); mask++)
{
int sum = 0;
for(int j=1; j<=m; j++)
{
if(mask & (1 << (j - 1))) sum += b[j];
}
if(sum == a[i]) vc.pb(mask);
}
for(int mask=0; mask<(1<<m); mask++)
{;
for(int v : vc)
{
if((mask & v) != v) continue;
if(f[i - 1][mask ^ v])
{
f[i][mask] = 1;
break;
}
}
}
}
for(int i=0; i<(1<<m); i++)
if(f[n][i])
{
cout << "YES";
return;
}
cout << "NO";
}
int32_t main()
{
// freopen("x.inp", "r", stdin);
ios_base::sync_with_stdio(false);
cin.tie(nullptr);
ReadInput();
Solve();
}
