#include <bits/stdc++.h>
using namespace std;
#define int long long
signed main() {
ios_base::sync_with_stdio(false);
cin.tie(0); cout.tie(0);
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];
vector<int> left(1 << m, -1), dp(1 << m, -1);
left[0] = dp[0] = 0;
bool ok = false;
for (int s = 0; s < (1 << m); s++) {
for (int i = 0; i < m; i++) {
if (!((s >> i) & 1)) continue;
int prev = s ^ (1 << i);
if (dp[prev] == -1) continue;
int cur = left[prev] + b[i];
if(cur < a[dp[prev]]) {
dp[s] = dp[prev];
left[s] = cur;
}
else if(cur == a[dp[prev]]){
dp[s] = dp[prev] + 1;
left[s] = 0;
}
}
ok |= (dp[s] == n);
}
cout << (ok ? "YES\n" : "NO\n");
}
