#include <bits/stdc++.h>
using namespace std;
int a[25];
int b[25];
int p[25];
int main() {
int N, M;
cin >> N >> M;
vector<int> a(N), b(M);
for (int i = 0; i < N; i++) cin >> a[i];
for (int i = 0; i < M; i++) cin >> b[i];
vector<int> sum(1 << M, 0);
for (int i = 1; i < (1 << M); i++) {
int l = i & -i;
int j = __builtin_ctz(l);
sum[i] = sum[i ^ l] + b[j];
}
for (int i = 0; i < N; i++) p[i + 1] = p[i] + a[i];
vector<int> dp((1 << M), -1);
dp[0] = 0;
for (int i = 0; i < (1 << M); i++) {
if (dp[i] == -1) continue;
int k = dp[i];
if (k == N) continue;
int s = sum[i];
int c = s - p[k];
for (int j = 0; j < M; j++) {
if (!(i & (1 << j))) {
int t = c + b[j];
if (t > a[k]) continue;
int k = i | (1 << j);
if (t == a[k]) dp[k] = max(dp[k], k + 1);
else dp[k] = max(dp[k], k);
}
}
}
for (int i = 0; i < (1 << M); i++)
if (dp[i] == N) {
cout << "YES";
return 0;
}
cout << "NO";
return 0;
}
