#include <bits/stdc++.h>
using namespace std;
int main() {
ios::sync_with_stdio(false);
cin.tie(0); cout.tie(0);
int n, m; cin >> n >> m;
vector<int> a(n), b(m);
for (int& v : a) cin >> v;
for (int& v : b) cin >> v;
vector<int> psum(n, 0);
for (int i = 0; i < n; i++)
psum[i] = (i > 0 ? psum[i - 1] : 0) + a[i];
vector<int> msum(1 << m, 0);
for (int mask = 0; mask < (1 << m); mask++) {
for (int i = 0; i < m; i++) {
if (mask >> i & 1) {
msum[mask] += b[i];
}
}
}
vector<int> f(1 << m, 0);
f[0] = 0;
for (int mask = 0; mask < (1 << m); mask++) {
int pos = f[mask];
int need_sum = psum[pos];
for (int i = 0; i < m; i++) {
if (mask >> i & 1) {
if (msum[mask | (1 < i)] == need_sum) {
msum[mask | (1 << i)] = pos + 1;
if (pos + 1 == n) {
cout << "YES";
return 0;
}
}
}
}
}
cout << "NO";
}
