//UGG JAA PED
#include<bits/stdc++.h>
using namespace std;
#define intt int64_t
//const intt mod = 1000000007;
#define fu(i,a,n) for(intt i=a;i<n;i++)
#define fus(i,a,n, k) for(intt i=a;i<n;i+=k)
#define fd(i,n,a) for(int i=n-1;i>=a;i--)
#define fds(i,n,a, k) for(int i=n-1;i>=a;i-=k)
intt binpow(intt a, intt b, intt m) {
a %= m;
intt res = 1;
while (b > 0) {
if (b & 1)
res = res * a % m;
a = a * a % m;
b >>= 1;
}
return res;
}
bool isPrime(int n)
{
if (n <= 1)
return false;
if (n <= 3)
return true;
if (n % 2 == 0 || n % 3 == 0)
return false;
for (int i = 5; i * i <= n; i = i + 6)
if (n % i == 0 || n % (i + 2) == 0)
return false;
return true;
}
bool func(intt i, intt left, intt n, intt m,vector<int> &people, vector<int> ¬es, intt mask)
{
if(i==-1)
{
cout<<"okay";
return true;
}
if(mask==0) return false;
bool ans = false;
for(intt j=0;j<m;j++)
{
// cout<<i<<j<<left<<", "<<mask<<" ";
if((mask & (1<<j)))
{
// cout<<i<<" "<<j<<"\n";
if(notes[j]==left)
{
// cout<<"m";
if(i==0) return 1;
ans = ans or func(i-1, people[i-1], n, m, people, notes, mask^(1<<j));
}
else if(notes[j]<left)
{
// cout<<"n";
ans = ans or func(i, left-notes[j], n, m, people, notes, mask^(1<<j));
}
}
}
return ans;
}
void solve()
{
intt n, m;
cin>>n>>m;
vector<int> people(n), notes(m);
fu(i, 0, n) cin>>people[i];
fu(i, 0, m) cin>>notes[i];
// vector<vector<intt>> dp()
intt mask = (1<<m)-1;
if(func(n-1, people[n-1], n, m, people, notes, mask)) cout<<"YES\n";
else cout<<"NO\n";
}
int main()
{
//ios_base::sync_with_stdio(false);
//cin.tie(NULL);
//int t;
//cin>>t;
//while(t--)
//{
solve();
//}
return 0;
}
