#include <bits/stdc++.h>
using namespace std;
const int INF=1e9+7, N=(1<<21);
#define all(x) x.begin(),x.end()
#define fr first
#define sc second
#define pb push_back
#define ret return
#define int long long
int v[25], b[25], dp[1<<22];
vector <int> d[25], g[25];
signed main(){
ios::sync_with_stdio(false);
cin.tie(nullptr); cout.tie(nullptr);
int n, m, k, i,j, mask; //HHH
cin >>n>>m;
for (i=0; i<n; ++i){
cin >>v[i];
}
for (i=0; i<m; ++i){
cin >>b[i];
}
for (i=0; i<n; ++i){
for (mask=0; mask<(1<<m); ++mask){
int sum=0;
for (j=0; j<32; ++j){
if (mask&(1<<j)){
sum+=b[j];
}
}
if (sum==v[i]){
d[i].pb(mask);
}
}
}
for (int x: d[0]){
g[0].pb(x);
}
for (i=1; i<n; ++i){
for (int mask : g[i-1]){
for (int nw : d[i]){
if (!(mask&nw)){
g[i].pb(mask|nw);
}
}
}
}
if (g[n-1].size())cout<<"YES";
else cout <<"NO";
}
