#include <bits/stdc++.h>
#pragma GCC optimize ("O3")
#pragma GCC target ("sse4")
using namespace std;
#define int long long int
const int N = 1e6 + 10;
const int md = 1e9 + 7;
const int INF = 1e18;
int32_t main(int32_t argc, char *argv[]) {
ios::sync_with_stdio(false);
cin.tie(nullptr);
int T = 1;
// cin >> T;
while (T--) {
int n, m;
cin >> n >> m;
vector<int> a(n + 1), b(m + 1);
for (int i = 1; i <= n; i++)
cin >> a[i];
for (int j = 1; j <= m; j++)
cin >> b[j];
vector<vector<int>> dp(n + 1, vector<int> ((1 << m) + 1));
for (int j = 0; j < (1 << m); j++)
dp[0][j] = 1;
string ans = "NO";
for (int i = 1; i <= n; i++) {
for (int j = 1; j < (1 << m); j++) {
int num = 0, sm = 0;
for (int k = 0; k < m; k++) {
if (((1 << k) & j)) {
sm += b[k + 1];
} else
num |= (1 << k);
}
if (sm == a[i] && dp[i - 1][num]) {
dp[i][j] = 1;
if (i == n)
ans = "YES";
}
if (dp[i][j])
for (int k = 0; k < m; k++) {
dp[i][(j | (1 << k))] = dp[i][j];
}
}
}
cout << ans << '\n';
}
return 0;
}
