#include <bits/stdc++.h>
using namespace std;
using ll = long long;
const int maxn=22;
const int N = 1<<maxn;
int n,m,a[maxn],b[maxn],sum[N],p[maxn];
bool can[maxn][N],dp[maxn][N];
int main(){
ios::sync_with_stdio(false);
cin.tie(0);
cin >> n >> m;
for(int i = 1;i <= n;i++) cin >> a[i],p[i]=p[i-1]+a[i];
for(int i = 0;i < m;i++) cin >> b[i];
for(int i = 0;i < (1<<m);i++)
for(int j = 0;j < m;j++) if(i & (1<<j)) sum[i] += b[j];
for(int i = 0;i < (1<<m);i++) can[0][i] = 1;
for(int i = 1;i <= n;i++){
for(int j = 0;j < (1<<m);j++) if(sum[j] == p[i]) can[i][j] = can[i-1][j];
for(int j = 0;j < (1 << m);j++)
for(int k = 0;k < m;k++) if((1<<k) & j) if(can[i][j-(1<<k)] == 1) can[i][j]=1;
}
// for(int i = 1;i <= n;i++){
// cout<<i<<" ---> ";
// for(int j = 0;j < (1<<m);j++) if(can[i][j] == 1) cout<<j<<' ';
// cout<<'\n';
// }
if(can[n][(1<<m) - 1]) cout<<"YES";
else cout<<"NO";
}
