#include <bits/stdc++.h>
using namespace std;
const int N=20;
const int MASK=(1<<N)+5;
int n,m,h,sum,pos,a[N+5],b[N+5],pre[N+5];
bool check[MASK];
int main()
{
ios_base::sync_with_stdio(NULL);
cin.tie(NULL); cout.tie(NULL);
cin >> n >> m;
for (int i=1;i<=n;i++)
{
cin >> a[i];
pre[i]=pre[i-1]+a[i];
}
for (int j=0;j<m;j++)
cin >> b[j];
h=(1<<m)-1;
check[0]=true;
for (int mask=0;mask<=h;mask++)
if (check[mask])
{
sum=0;
for (int j=0;j<m;j++)
if (mask&(1<<j)) sum+=b[j];
if (sum==pre[n])
{
cout << "YES";
return 0;
}
for (int i=1;i<=n;i++)
if (pre[i]>sum)
{
pos=i;
break;
}
for (int j=0;j<m;j++)
if ((mask&(1<<j))==0 and sum+b[j]<=pre[pos]) check[mask^(1<<j)]=true;
}
cout << "NO";
}
