#include <bits/stdc++.h>
#define pb push_back
#define pf push_front
#define F first
#define S second
#define int long long
#define all(x) (x).begin(),(x).end()
#define webbly ios_base::sync_with_stdio(0);cin.tie(0);
using namespace std;
typedef long long ll;
const int maxn = 3e5 + 5;
const int mod = 1e9 + 7;
int n,m,a[1001],b[1001];
void sayat_apni_eksperta(){
cin >> n >> m;
for(int i = 1; i <= n; i++){
cin >> a[i];
}
for(int i = 1; i <= m; i++){
cin >> b[i];
}
for(int mask = 0; mask < (1 << m); mask++){
int sum = 0;
for(int i = 0; i < m; i++){
if(mask & (1 << i)){
sum += b[i + 1];
}
}
if(sum == a[1]){
cout << "YES";
return;
}
}
cout << "NO";
}
signed main(){
/*
freopen("pieaters.in", "r", stdin);
freopen("pieaters.out", "w", stdout);
*/
webbly
int tt = 1;
//cin >> tt;
while(tt--) sayat_apni_eksperta();
return 0;
}
/*
*/
