#include "bits/stdc++.h"
using namespace std;
int n, m, k;
vector <int> a, b, c, v;
map <pair<int,int>, bool> dp;
void f1(int x, int ind, int y){
if(x < 0) return;
if(ind == m){
if(x == 0) v.push_back(y);
return;
}
if((y>>ind)&1){
f1(x,ind+1,y);
return;
}
f1(x-b[ind+1],ind+1,y|(1<<ind));
f1(x,ind+1,y);
}
bool f(int x){
if(x == n+1) return true;
if(dp.find({x,k}) != dp.end()) return false;
v.clear();
f1(a[x],0,k);
vector <int> v1 = v;
for(auto i : v1){
k = i;
if(f(x+1)) return true;
}
dp[{x,k}] = false;
return false;
}
int main(){
ios::sync_with_stdio(false); cin.tie(nullptr);
cin >> n >> m;
a.resize(n+1), b.resize(m+1), c.resize(m+1);
for(int i = 1; i <= n; i++){
cin >> a[i];
}
for(int i = 1; i <= m; i++){
cin >> b[i];
}
cout << (!f(1) ? "NO\n" : "YES\n");
}
