/** kutbilim.one **/
#include <bits/stdc++.h>
using namespace std;
#define all(x) x.begin(),x.end()
#define int long long
#define endl '\n'
signed main(){
ios_base::sync_with_stdio(false);
cin.tie(nullptr);
int n, m;
cin >> n >> m;
vector<int> a(n), b(m);
for(int i = 0; i < n; i++) cin >> a[i];
for(int i = 0; i < m; i++) cin >> b[i];
int MAX = *max_element(all(a));
vector<int> dp(MAX+1);
dp[0] = 1;
sort(all(b));
for(int i = m; i >= 0; i--){
for(int j = MAX-b[i]; j >= 0; j--){
if(dp[j] == true){
dp[j+b[i]] = true;
break;
}
}
}
int result_out = 1;
for(int i = 0; result_out && i < n; i++){
if(dp[a[i]] == false) result_out = false;
}
cout << (result_out ? "YES" : "NO");
return 0;
}
