/**
* author: tuncypasha
* file: c.cpp
* created: 17.02.2026 22:58
**/
#include <bits/stdc++.h>
#include <bits/extc++.h>
#define pasha ios_base::sync_with_stdio(false); cin.tie(0); cout.tie(0);
#define int long long
#define ff first
#define ss second
#define pb push_back
#define all(v) begin(v), end(v)
using namespace std;
using namespace __gnu_pbds;
// mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
constexpr int N = 2e5 + 5, mod = 1e9 + 7, p = 37, oo = 1e16;
void _() {
int n, m;
cin >> n >> m;
vector<int> a(n + 1);
for (int i = 1; i <= n; ++i)
cin >> a[i];
vector<int> b(m);
for (int i = 0; i < m; ++i)
cin >> b[i];
vector<vector<int>> dp((1LL << m) + 5, vector<int>(n + 5, 0));
dp[0][0] = 1;
for (int i = 1; i <= n; ++i) {
for (int mask = 0; mask < (1LL << m); ++mask) {
for (int submask = mask; submask; submask = (submask - 1) & mask) {
int out = (mask ^ submask);
int sum = 0;
for (int j = 0; j < m; ++j) {
if (submask & (1LL << j))
sum += b[j];
}
dp[mask][i] |= (dp[out][i - 1] && sum == a[i]);
}
}
}
for (int mask = 0; mask < (1LL << m); ++mask) {
if (dp[mask][n]) {
cout << "YES" << '\n';
return;
}
}
cout << "NO" << '\n', void();
}
signed main() {
pasha
int t = 1;
// cin >> t;
for (int cs = 1; cs <= t; ++cs) {
_();
// cout << '\n';
}
}
