#include <bits/stdc++.h>
using namespace std;
const int mxn = 21;
const int mxa = 1010;
vector<int> bit[mxa * mxn];
int sum[1 << mxn];
int n, a[mxn];
int m, b[mxn];
int dp[mxn][1 << mxn];
int solve(int i, int cur) {
if(i == 0) return 1;
if(dp[i][cur] > -1) return dp[i][cur];
dp[i][cur] = 0;
for(int las : bit[a[i]])
dp[i][cur] |= ((cur | las) == cur && solve(i - 1, cur ^ las));
return dp[i][cur];
}
int main() {
cin >> n >> m;
for(int i = 1; i <= n; i++) cin >> a[i];
for(int j = 0; j < m; j++) cin >> b[j];
for(int cur = 0; cur < (1 << m); cur++) {
int sus, prv;
for(sus = 0; sus < m; sus++)
if(cur & (1 << sus)) break;
prv = cur ^ (1 << sus);
sum[cur] = sum[prv] + b[sus];
bit[sum[cur]].push_back(cur);
}
for(int i = 0; i < mxn; i++)
for(int cur = 0; cur < (1 << mxn); cur++)
dp[i][cur] = -1;
if(solve(n, (1 << m) - 1)) cout << "YES\n";
else cout << "NO\n";
return 0;
}
