#include <bits/stdc++.h>
#define nl '\n'
#define pb push_back
#define E exit(0)
#define all(v) v.begin(),v.end()
#define ff first
#define ss second
#define sz(s) (s).size()
using namespace std;
using ll=long long;
using pii=pair<int,int>;
using pll=pair<ll,ll>;
const int N=5e5+5;
const int INF=1e9+7;
const int eps=1e-6;
int dp[N];
void solve() {
int n,m;
cin>>n>>m;
int a[n+1],b[m+1];
for (int i=1;i<=n;i++) cin>>a[i];
for (int i=1;i<=m;i++) cin>>b[i];
dp[0]=1;
for (int i=1;i<=n;i++) {
for (int j=1;j<=m;j++) {
for (int w=a[i];w>=0;w--) {
if (dp[w-b[i]]==1 && w-b[i]>=0) {
dp[w]=1;
}
}
}
if (!dp[a[i]]) cout<<"NO",E;
}
cout<<"YES";
cout<<nl;
}
ll test=1;
int main () {
// freopen(".in","r",stdin);
// freopen(".out","w",stdout);
ios_base::sync_with_stdio(0);
cin.tie();
// cin>>test;
while (test--) solve();
return 0;
}
