// #pragma GCC optimize("O3,unroll-loops")
//#pragma GCC target("avx2,bmi,bmi2,lzcnt,popcnt")
#include<bits/stdc++.h>
#define ll long long
using namespace std;
template<typename... T>
void see(T&... args) { ((cin >> args), ...);}
template<typename... T>
void put(T&&... args) { ((cout << args << " "), ...);}
template<typename... T>
void putl(T&&... args) { ((cout << args << " "), ...); cout<<'\n';}
#define error(args...) { string _s = #args; replace(_s.begin(), _s.end(), ',', ' '); stringstream _ss(_s); istream_iterator<string> _it(_ss); err(_it, args); }
void err(istream_iterator<string> it) {}
template<typename T, typename... Args>
void err(istream_iterator<string> it, T a, Args... args) {cerr << *it << "=" << a << ", "; err(++it, args...);}
#define du long double
#define m_p make_pair
#define pb push_back
#define pii pair<int,int>
#define piii pair<pii,int>
#define vi vector<int>
#define vii vector<pii>
#define viii vector<pair<int,pii> >
#define si set<int>
#define sii multiset<pii>
#define siii set<pair<int,pii> >
#define F first
#define S second
#define pre precision
#define sz size()
#define all(x) x.begin(),x.end()
#ifndef ONLINE_JUDGE
#define OK cout << __LINE__ << "| "<< "---------------------------OK-----------------------" << endl;
#define deb(x) cout << __LINE__ << "| "<< #x << " = " << x << endl;
#else
#define OK
#define deb(x)
#endif
#define nl cout<<'\n'
#define OPEN freopen ("exam.in","r" , stdin), freopen ("exam.out","w",stdout)
const ll mod=1e9+7;
const ll inf=1e18;
const du PI=3.14;
const int N=21;
const int dx[]={-1,0,1,0};
const int dy[]={0,-1,0,1};
int a[23],b[23];
int ans[N];
pair <int,int> dp[(1<<21)+9];
void Teemka_abi(){
int n,m;
cin>>n>>m;
for(int i=1;i<=n;i++){
cin>>a[i];
}
for(int j=1;j<=m;j++){
cin>>b[j];
}
for(int mask=0;mask<(1<<m);mask++){
for(int j=0;j<m;j++){
if(mask & (1 << j)){
int k=dp[mask^(1<<j)].F;
int smn=dp[mask^(1<<j)].S+b[j+1];
if(smn==a[k+1]){
smn=0;
k++;
}
if(dp[mask].F<k){
dp[mask]={k,smn};
}
else if(dp[mask].F==k){
dp[mask] = {k,smn};
}
}
}
if(dp[mask].F==n){
cout<<"YES";
return;
}
}
cout<<"NO";
}
signed main(){
ios_base::sync_with_stdio(false) ;
cin.tie(0) ;
cout.tie(0);
// OPEN;
int tt=1;
// cin>>tt;
while(tt--){
Teemka_abi();
cout<<endl;
}
}
