#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<bool>> dp(n + 1, vector<bool>(1 << m));
dp[0][0] = true;
for (int i = 0; i < n; ++i) {
for (int mask = 0; mask < 1 << m; ++mask) {
auto check = [&](int cur) {
int sum = 0;
for (int j = 0; j < m; ++j) {
if ((mask ^ cur) >> j & 1) {
sum += b[j];
}
}
if (sum == a[i]) {
dp[i + 1][mask] = dp[i + 1][mask] || dp[i][cur];
}
};
for (int cur = mask; cur > 0; cur = (cur - 1) & mask) {
check(cur);
}
check(0);
}
}
bool ans = false;
for (int i = 0; i < 1 << m; ++i) {
ans = ans || dp[n][i];
}
cout << (ans ? "YES" : "NO");
return 0;
}
