#include<bits/stdc++.h>
using namespace std;
int a[21],b[21];
pair<int,int> dp[1<<21];
int main(){
ios_base::sync_with_stdio(0);
cin.tie(0);cout.tie(0);
int n, m; cin>>n>>m;
for(int i = 0; i < n; i++) cin >> a[i];
for(int i = 0; i < m; i++) cin >> b[i];
for(int s = 0; s <(1<<m); s++){
for(int i = 0; i < m; i++){
if(s &(1<<i)) continue;
auto [id, x] = dp[s];
int j = s |(1<<i);
if(id == n) return cout<<"YES"<<'\n',0;
pair<int, int> cur;
if(x + b[i] == a[id]){
cur ={id + 1, 0};
if(id + 1 == n) return cout<<"YES"<<'\n',0;
}
else if(x + b[i] < a[id]) cur ={id, b[i] + x};
dp[j] = max(dp[j], cur);
}
}
cout<<"NO"<<'\n';
return 0;
}
