#include <bits/stdc++.h>
using namespace std;
int main() {
ios::sync_with_stdio(false);
cin.tie(nullptr);
int n, m;
cin >> n >> m;
vector<int> a(n);
for (auto &a_i: a) {
cin >> a_i;
}
vector<int> b(m);
for (auto &b_i: b) {
cin >> b_i;
}
vector<vector<int>> masks(n);
for (int mask = 0; mask < 1 << m; ++mask) {
int sum = 0;
for (int i = 0; i < m; ++i) {
if ((mask) >> i & 1) {
sum += b[i];
}
}
for (int i = 0; i < n; ++i) {
if (sum == a[i]) {
masks[i].push_back(mask);
}
}
}
vector<bool> dp(1 << m);
dp[0] = true;
for (int mask = 0; mask < 1 << m; ++mask) {
if (dp[mask]) {
int sum = 0;
for (int i = 0; i < m; ++i) {
if (mask >> i & 1) {
sum += b[i];
}
}
int i = 0;
for (; i < n; ++i) {
if (sum >= a[i]) {
sum -= a[i];
} else {
break;
}
}
if (i == n) {
if (sum == 0) {
cout << "YES";
return 0;
}
continue;
}
for (int j = 0; j < m; ++j) {
if (mask >> j & 1) continue;
if (b[j] + sum <= a[i]) {
dp[mask ^ 1 << j] = true;
}
}
}
}
cout << "NO";
return 0;
}
