//ghost rule - deco*27
#include <bits/stdc++.h>
#define int long long
using namespace std;
int a[21], b[21], pref[21];
int n, m;
bool *dp;
int *vals;
bool ans=false;
bool f(int ind, int s){
if(ind>=n) {ans=true; return 1;}
if(dp[s]) return dp[s];
bool ret=0;
for(int i=0; i<m; i++){
if(s&(1<<i)) continue;
int add=s|(1<<i);
if(vals[add]<pref[ind]) ret|=f(ind, add);
else if(vals[add]==pref[ind]) ret|=f(ind+1, add);
}
return dp[s]=ret;
}
signed main()
{
cin>>n>>m;
dp=(bool*)calloc(1<<m, sizeof(bool));
vals=(int*)calloc(1<<m, sizeof(int));
for(int i=0; i<n; i++){
cin>>a[i];
pref[i]+=a[i];
if(i!=0) pref[i]+=pref[i-1];
}
for(int i=0; i<m; i++) cin>>b[i];
for(int i=0; i<(1<<m); i++){
int add=0;
for(int j=0; j<m; j++){
if((1<<j)&i) add+=b[j];
}
vals[i]=add;
}
f(0, 0);
/*for(int i=0; i<(1<<m); i++) cout<<i<<": "<<dp[i]<<"\n";
cout<<"\n";*/
if(ans) cout<<"YES";
else cout<<"NO";
return 0;
}
