#include <bits/stdc++.h>
#define ll long long
#define pb push_back
#define endl "\n"
#define vec vector<ll>
#define vecvec vector<vector<ll>>
using namespace std;
/*#define FileName ""
string Ghhhh = ".in";
string Ghhhhh = ".out";
ifstream Girdi(FileName + Ghhhh);
ofstream Cikti(FileName + Ghhhhh);
#define cin Girdi
#define cout Cikti*/
ll n,m;
vector<ll> person;
vector<ll> banknot;
vector<vector<bool>> dp;
vector<ll> mask_val;
inline void dp_func(ll person_no, ll mask){
if(person_no == n+1){
cout << "YES" << endl;
exit(0);
}
if(dp[person_no][mask] != 0) return;
for(ll i = 1 ; i <= (1<<m) - 1 ; i++){
if((i & mask) == i and mask_val[i] == person[person_no]){
dp_func(person_no+1,mask ^ i);
}
}
dp[person_no][mask] = 1;
}
inline void solve(){
cin >> n >> m;
person.resize(n+1);
banknot.resize(m+1);
dp.resize(n+1,vector<bool>((1<<m),0));
mask_val.resize(1<<m,0);
for(ll i = 1 ; i <= n ; i++) cin >> person[i];
for(ll i = 1 ; i <= m ; i++) cin >> banknot[i];
for(ll i = 1 ; i <= (1<<m) - 1 ; i++){
for(ll j = 0 ; j <= m-1 ; j++){
if(i & (1<<j)){
mask_val[i] += banknot[j+1];
}
}
}
dp_func(1,(1<<m) - 1);
cout << "NO" << endl;
}
signed main(){
ios_base::sync_with_stdio(0);
cin.tie(0);
ll t = 1;
//cin >> t;
while(t--){
solve();
}
}
