#include <bits/stdc++.h>
using namespace std;
#define debug(x) cerr << #x << ' ' << x << '\n';
int n, m, a[25], b[25], sum[1 << 20];
bool dp[1 << 20][20];
signed main () {
ios_base::sync_with_stdio(0);
cin.tie(0);
cout.tie(0);
cin >> n >> m;
for (int i = 1; i <= n; i++)
cin >> a[i];
for (int i = 0; i < m; i++)
cin >> b[i];
for (int mask = 0; mask < (1 << m); mask++)
for (int i = 0; i < m; i++)
if (mask >> i & 1) sum[mask] += b[i];
dp[0][0] = true;
for (int i = 1; i <= n; i++) {
for (int mask = 1; mask < (1 << m); mask++) {
for (int sub = mask; ; sub = (sub - 1) & mask) {
if (dp[sub][i - 1] && (sum[mask ^ sub] == a[i])) {
dp[mask][i] = true;
break;
}
if (sub == 0) break;
}
if (i == n && dp[mask][i]) {
cout << "YES";
return 0;
}
}
}
cout << "NO";
}
