#include "bits/stdc++.h"
using namespace std;
int n,m,a[25],b[25],f[1001];
vector<pair<int,int>>s;
bool dp[25][1<<20];
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 mask=0;mask<(1<<m);mask++){
int sum=0;
for (int j=0;j<m;j++){
if(mask&(1<<j))sum+=b[j];
}
if(sum<=1000&&f[sum])s.emplace_back(sum,mask);
}
dp[0][0]=1;
for(int i=1;i<=n;i++){
for(auto[sum,mask]:s){
if(sum!=a[i-1])continue;
for(int k=0;k<(1<<m);k++){
if((k&mask)==0&&dp[i-1][k])dp[i][(k|mask)]=1;
}
}
}
cout<<(*max_element(dp[n],dp[n]+(1<<m))?"YES":"NO");
}
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