#include <bits/stdc++.h>
#define ll long long
#define pb push_back
#define all(x) x.begin(),x.end()
#define ld long double
using namespace std;
int main()
{
ll n,m;cin>>n>>m;
ll a[n+5],b[m+5],pre[n+5];
for(int i=0;i<n;i++) cin>>a[i];
for(int i=0;i<m;i++) cin>>b[i];
ll dp[(1<<m)+5],ind1[(1<<m)+5];
pre[0]=a[0];
for(int i=1;i<n;i++) pre[i]=pre[i-1]+a[i];
for(int i=0;i<(1<<m)+5;i++){dp[i]=0;ind1[i]=0;}
dp[0]=1;
for(int mask=1;mask<(1<<m);mask++){
ll sum=0,ind=0,s1=0;
for(int j=0;j<m;j++){
if(mask&(1<<j)) sum+=b[j];
}
for(int i=0;i<n;i++){
if(sum>=pre[i]) ind++;
}
ind1[mask]=ind;
for(int j=0;j<m;j++){
if(mask&(1<<j)){
ll c=mask-(1<<j);
if(dp[c] and sum<=pre[ind1[c]]){
dp[mask]=1;
}
}
}
if(dp[mask] and sum==pre[n-1]){
cout<<"YES"<<endl;return 0;
}
}
cout<<"NO"<<endl;
}
