#include <bits/stdc++.h>
using namespace std;
#define all(v) v.begin(),v.end()
#define eb emplace_back
#define ll long long
#define fi first
#define se second
int i,n,t,m,j,tmp;
int a[22],b[22],sum[(1<<20)],mask,sub;
bool dp[22][(1<<20)],ans;
int main()
{
ios_base::sync_with_stdio(false);
cin.tie(0);
cout.tie(0);
cin>>n>>m;
for(i = 1;i<=n;i++)
{
cin>>a[i];
}
for(i = 0;i<m;i++)
{
cin>>b[i];
}
for( mask = 1;mask < (1<<m);mask++)
{
i = __builtin_ctz(mask);
sum[mask] = sum[mask ^ (1<<i)] + b[i];
}
dp[0][0] = 1;
for(i = 1;i<=n;i++)
{
for( mask = 0;mask<(1<<m);mask++)
{
for( sub = mask;sub;sub = (sub - 1) & mask)
{
if(dp[i-1][sub] && sum[mask ^ sub] == a[i])
{
dp[i][mask] = 1;
break;
}
}
if(dp[i-1][0] && sum[mask] == a[i])
{
dp[i][mask] = 1;
}
if(dp[n][mask]==1)
{
cout<<"YES";
return 0;
}
}
}
cout<<"NO";
return 0;
}
