#include <bits/stdc++.h>
using namespace std;
#define F first
#define S second
#define pb push_back
#define int long long
const int N = 5e5+100;
void solve(){
int n, m;
cin >> n >> m;
int a[n+1], b[m+1], c[m+1];
for(int i=1;i<=n;i++) cin >> a[i];
for(int i=1;i<=m;i++){
cin >> b[i];
c[i]=i;
}
do{
int sum=0, j=1;
for(int i=1;i<=m;i++){
sum+=b[c[i]];
if(sum==a[j]){
sum=0;
j++;
}
if(j==n+1){
cout << "YES\n";
return;
}
}
}while(next_permutation(c+1, c+m+1));
cout << "NO\n";
}
/*dp[i+w[k]-1][j+h[k]-1]
21 11
5
5 3
6 7
3 2
5 6
21 11
*/
signed main(){
ios_base::sync_with_stdio(0); cin.tie(0);
//freopen("promote.in","r",stdin);
//freopen("promote.out","w",stdout);
int tt=1;
// cin >> tt;
while(tt--){
solve();
}
}
