#include <bits/stdc++.h>
using namespace std;
#define f1(n) for(int i=0;i<n;i++)
#define speed ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0)
#define int long long
#define pb push_back
int getbit(int n,int idx){return ((n>>idx)&1LL);}
typedef long long ll;
const int N=20+5;
int n,m,a[N],b[N];bool vis[N];
int rec(int idx){
if(idx==n)return 1;
for(int mask=0;mask<(1<<m);++mask){
vector<int> v;bool valid=true;int sm=0;
for(int i=0;i<m;i++){
if(getbit(mask,i)){
if(vis[i]){
valid=false;
break;
}
else v.pb(i),sm+=b[i];
}
}
if(valid&&sm==a[idx]){
for(auto it:v)vis[it]=true;
if(rec(idx+1))return 1;
for(auto it:v)vis[it]=false;
}
}
return 0;
}
int32_t main()
{
speed;
int tt=1,cnt=1;//cin>>tt;
while(tt--){
//freopen("bank.in","r",stdin);
//freopen("bank.out","w",stdout);
cin>>n>>m;
f1(n)cin>>a[i];f1(m)cin>>b[i];
cout<<(rec(0) ? "YES":"NO");
}
}
