#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define fi first
#define se second
#define oo 1e18
const int MM = 1e6+7;
int n,m,a[MM],b[MM];
pair<int,int> dp[1 << 20];
// .fi = so nguoi co the tra luong tinh den hien tai
// .se = so tien dang co
signed main()
{
ios_base::sync_with_stdio(0);
cin.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];
int id = 1;
for(int mask = 0;mask < (1 << m);mask++) {
for(int i = 0;i < m;i++) {
if(mask >> i & 1) {
int nums = dp[mask].fi, cur_coin = dp[mask].se;
if(cur_coin + b[i] == a[id]) {
dp[mask] = max(dp[mask],{nums+1,0});
id++;
}
else if(cur_coin + b[i] < a[id])
dp[mask] = {nums,cur_coin + b[i]};
}
}
}
for(int mask = 0;mask < (1 << m);mask++) {
if(dp[mask] == make_pair(n,0)) {
cout << "YES";
return 0;
}
}
cout << "NO";
return 0;
}
