#include <bits/stdc++.h>
using namespace std;
using ll = long long;
using pi = pair<int, int>;
using pl = pair<long long, long long>;
using vi = vector<int>;
using vl = vector<long long>;
using vpi = vector<pair<int, int>>;
using vpl = vector<pair<long long, long long>>;
#define fur(i, a, b) for(ll i = a; i <= (ll)b; ++i)
#define ruf(i, a, b) for(ll i = a; i >= (ll)b; --i)
#define fr first
#define sc second
#define mp make_pair
#define pb emplace_back
#define nl "\n"
#define all(x) (x).begin(),(x).end()
#define rall(x) (x).rbegin(),(x).rend()
int main()
{
ios::sync_with_stdio(0);
cin.tie(0);
ll n, m;
cin >> n >> m;
ll a[n], b[m];
fur(i, 0, n - 1) {
cin >> a[i];
}
fur(i, 0, m - 1) {
cin >> b[i];
}
ll perm[m];
iota(perm, perm + m, 0);
do {
ll i = 0;
ll amt = 0;
fur(j, 0, m - 1) {
amt += b[perm[j]];
if(amt == a[i]) {
amt = 0;
++i;
if(i == n) {
cout << "YES" << nl;
return 0;
}
}
}
} while(next_permutation(perm, perm + m));
cout <<"NO" << nl;
}
