#include<bits/stdc++.h>
using namespace std;
int dp[21][(1<<20)+10];
int cnt(int i,int mask,int salary[],int notes[],int n,int m,int val){
if(i==n){
return 1;
}
else if(dp[i][mask]!=-1){return dp[i][mask];}
int ans=0;
for(int j=0;j<m;j++){
if(mask&(1<<j)){continue;}
if(notes[j]<val){
ans|=cnt(i,mask|(1<<j),salary,notes,n,m,val-notes[j]);
}
if(notes[j]==val){
ans|=cnt(i+1,mask|(1<<j),salary,notes,n,m,salary[i+1]);
}
}
return dp[i][mask]=ans;
}
int main(){
int n,m;cin>>n>>m;int salary[n+1],notes[m+1];
for(int i=0;i<n;i++){cin>>salary[i];}
for(int i=0;i<m;i++){cin>>notes[i];}
salary[n]=notes[m]=0;
memset(dp,-1,sizeof(dp));
int ans=cnt(0,0,salary,notes,n,m,salary[0]);
(ans==1)?cout<< "YES":cout<< "NO";
}
