#include "bits/stdc++.h"
#define fast ios_base::sync_with_stdio(0) , cin.tie(0) , cout.tie(0)
#define endl '\n'
#define int long long
#define f first
#define mp make_pair
#define s second
using namespace std;
//string m;
signed main()
{
fast;
int n,m;
cin>>n>>m;
vector<int> a(n);
vector<int> b(m);
for(int i=0; i<n; i++)
{
cin>>a[i];
}
for(int i=0; i<m; i++)
{
cin>>b[i];
}
vector<int> leftover(1 << m, -1); //leftover amount after using banknotes in mask
vector<int> people_covered(1 << m, -1); //max prefix of peopel we can cover with banknotes in mask
leftover[0] = 0;
people_covered[0] = 0;
for(int mask=0; mask<(1<<m); mask++)
{
for(int i=0; i<m; i++)
{
if(!(mask & (1<<i))) continue;
int pmask=mask^(1<<i);
if(leftover[pmask]+b[i] < a[people_covered[pmask]])
{
people_covered[mask]=people_covered[pmask];
leftover[mask]=leftover[pmask]+b[i];
}
else if(leftover[pmask]+b[i]==a[people_covered[pmask]])
{
people_covered[mask]=people_covered[pmask]+1;
leftover[mask]=0;
}
}
if(people_covered[mask]==n)
{
cout<<"YES"<<endl;
return 0;
}
}
cout<<"NO"<<endl;
}
