#include <bits/stdc++.h>
using namespace std;
int n, m;
vector<int> a, b, c;
void f(int x) {
if (x == m + 1) {
if (count(a.begin() + 1, a.end(), 0) == n) {
cout << "YES";
exit(0);
}
return;
}
for (int i = 0; i <= m; i++) {
a[i] -= b[x];
f(x + 1);
a[i] += b[x];
}
}
int main() {
ios::sync_with_stdio(false); cin.tie(nullptr);
cin >> n >> m;
a.assign(n + 1, 0);
for (int i = 1; i <= n; i++) {
cin >> a[i];
}
b.assign(m + 1, 0);
for (int i = 1; i <= m; i++) {
cin >> b[i];
}
c.assign(m + 1, 0);
f(1);
cout << "NO";
}
