/*
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*/
#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
#pragma GCC optimize("Ofast","unroll-loops","inline","omit-frame-pointer")
using namespace std;
using namespace __gnu_pbds;
using ll = int;
using pll = pair<ll, ll>;
using vll = vector<ll>;
using mll = map<ll, ll>;
using sll = set<ll>;
using sc = set<char>;
typedef tree<
ll,
null_type,
less<ll>,
rb_tree_tag,
tree_order_statistics_node_update>
cheese;
#define printv(v) {for(auto &elem:v){cout<<elem<<" ";}cout<<endl;}
#define printg(g) {for(auto &row:g){printv(row)};}
#define printm(m) {for(auto &pa:m){cout << pa.first << "," << pa.second << " ";};cout<<endl;}
int main()
{
ios_base::sync_with_stdio(false);
cin.tie(NULL);cout.tie(NULL);
//vll segtree,lazy;
//ll segtree_size;
//segtree=builder(arr);
//segtree_size=segtree.size()/2;
//lazy.assign(segtree_size*2,0);
//update: query_sum(segtree,lazy,a,b,c,1,segtree_size,1);
//query: cout << query_sum(segtree,lazy,a,b,-1,1,segtree_size,1) << endl;
ll n,m,k;
cin >> n >> m;
vll arr(n);
vll barr(m);
for(int i=0;i<n;i++)
cin >> arr[i];
for(int i=0;i<m;i++)
cin >> barr[i];
ll limit=1<<m;
vll solved(limit,0);
vll left(limit,INT_MAX);
queue<ll> BFS;
set<ll>seen({0});
BFS.push(0);
left[0]=arr[0];
while(!BFS.empty())
{
ll curr=BFS.front();
BFS.pop();
//cout << curr << " , " << left[curr]<< endl;
for(int i=0;i<m;i++)
{
ll _solved=solved[curr];
ll _left=left[curr];
if((1<<i)&curr || barr[i]>_left)
continue;
_left-=barr[i];
if(_left==0)
{
_solved+=1;
if(_solved==n)
{
cout << "YES\n";
return 0;
}
_left=arr[_solved];
}
ll neighbour=curr|(1<<i);
if(seen.find(neighbour)==seen.end())
{
seen.insert(neighbour);
BFS.push(neighbour);
}
if(_solved>solved[neighbour] || _solved==solved[neighbour] && _left<left[neighbour])
{
solved[neighbour]=_solved;
left[neighbour]=_left;
}
}
}
cout << "NO\n";
}
