#include <bits/stdc++.h>
using namespace std;
vector<int> h(21);
vector<int> bill(21);
vector<bool> visited(21,false);
int n,m;
bool pay(int curr);
bool subset_sum(int curr, int st, int currSum) {
if (currSum == h[curr]) {
return pay(curr + 1);
}
int last = -1;
for (int i = st; i < m; ++i) {
if (visited[i] || bill[i] == last) continue;
int nxt = currSum + bill[i];
if (nxt > h[curr]) continue;
visited[i] = true;
if (subset_sum(curr, i + 1, nxt))
return true;
visited[i] = false;
last = bill[i];
if (currSum == 0)
break;
if (nxt == h[curr])
break;
}
return false;
}
bool pay(int curr) {
if (curr == n)
return true;
return subset_sum(curr, 0, 0);
}
int main(){
ios::sync_with_stdio(0);
cin.tie(nullptr);
cin >> n >> m;
for(int i = 0; i < n; i++){
cin >> h[i];
}
for(int i = 0; i < m; i++){
cin >> bill[i];
}
sort(h.rbegin(),h.rend());
sort(bill.rbegin(),bill.rend());
cout << (pay(0) ? "YES\n" : "NO\n");
}
