#include"bits/stdc++.h"
using namespace std;
int n,m,a[25],b[25],f[1001],cur[1001],pre[(1<<20)];
void sol(int i,int v){
if(i==n){
for(int j=0;j<n;j++){
if(cur[a[j]]<f[a[j]])return;
}
cout<<"YES";
exit(0);
}
for(int k=0;k<(1<<m);k++){
if(k&v||pre[k]>1000)continue;
cur[pre[k]]++;
sol(i+1,v|k);
cur[pre[k]]--;
}
}
int main(){
cin.tie(0)->sync_with_stdio(0);
cin>>n>>m;
for(int i=0;i<n;i++){
cin>>a[i];
f[a[i]]++;
}
for(int i=0;i<m;i++)cin>>b[i];
for(int k=0;k<(1<<m);k++){
for(int j=0;j<m;j++){
if(k&(1<<j))pre[k]+=b[j];
}
}
sol(0,0);
cout<<"NO";
}
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