#include <bits/stdc++.h>
using namespace std;
const int N = 20;
int n, m, ans, a[N], b[N];
bool dp[N][(1 << N)];
vector<int> c[20005];
signed main(){
ios_base::sync_with_stdio(false);
cin.tie(NULL);
cin >> n >> m;
for(int i = 0;i<n;i++) cin >> a[i];
for(int i = 0;i<m;i++) cin >> b[i];
for(int msk = 0;msk<(1 << m);msk++){
int sm = 0;
for(int i = 0;i<m;i++){
if(msk & (1 << i)) sm += b[i];
}
c[sm].push_back(msk);
}
dp[0][0] = 1;
for(int i = 0;i<n;i++){
for(int msk = 0;msk<(1 << m);msk++){
if(dp[i][msk]){
for(auto x : c[a[i]]) if(!(x & msk)) dp[i + 1][x | msk] = 1;
}
}
}
for(int msk = 0;msk<(1 << m);msk++) ans |= dp[n][msk];
if(ans) cout << "YES";
else cout << "NO";
}
