#include "bits/stdc++.h"
#define ff first
#define ss second
#define ll long long
using namespace std;
const int N = 20;
const int inf = 1e9+1;
int dp[1<<N],sm[1<<N];
int main(){
ios::sync_with_stdio(0);
cin.tie(0);
// freopen("file.in","r",stdin);
int n,m;
cin >> n >> m;
int a[n];
for (int i = 0;i < n;i++){
cin >> a[i];
}
int b[m];
for (int i = 0;i < m;i++){
cin >> b[i];
}
memset(dp,-1,sizeof(dp));
dp[0] = 0;
sm[0] = 0;
for (int mask = 0;mask < (1<<m);mask++){
if (dp[mask] == -1)
continue;
for (int i = 0;i < m;i++){
if (!(mask & (1<<i))){
int h = mask|(1<<i);
int l = dp[mask];
int s = sm[mask] + b[i];
if (l == n)
continue;
if (s < a[l]){
dp[h] = l;
sm[h] = s;
}
else if (s == a[l]){
dp[h] = l+1;
sm[h] = 0;
}
}
}
if (dp[mask] == n){
cout << "YES\n";
return 0;
}
}
cout << "NO\n";
}
