//gm --- akezhon
#include <bits/stdc++.h>
// #pragma GCC optimize("Ofast,no-stack-protector,unroll-loops,fast-math,O3")
// #pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,tune=native")
#define pb push_back
#define F first
#define S second
#define all(v) v.begin(),v.end()
#define pii pair<int,int>
#define tm (tl+tr)/2
#define TL v+v, tl, tm
#define TR v+v+1, tm+1, tr
#define DA l <= tl && tr <= r
#define NE r < tl || tr < l
#define double long double
// #define int long long
using namespace std;
const int N=2e5+7;
const int N2=1e6+7;
const int mod=1e9+7;
// const int inf=2e18;
const double eps=1e-9;
int n, m;
int a[21], b[21], p[21];
bool dp[2100000][2];
void AlemAmenov(){
cin >> n >> m;
for(int i=1; i <= n; i++){
cin >> a[i];
p[i] = p[i-1]+a[i];
}
for(int i=1; i <= m; i++){
cin >> b[i];
}
bool ok=0;
for(int i=1; i <= n; i++){
for(int mask=1; mask < (1<<m); mask++){
int sum=0;
for(int j=1; j <= m; j++){
if(mask&(1<<(j-1)))sum += b[j];
}
dp[mask][i&1]=0;
if(sum == p[i] && (dp[mask][(i&1)^1] || i==1))dp[mask][i&1]=1;
else{
for(int j=1; j <= m; j++){
if((mask&(1<<(j-1))) && dp[mask^(1<<(j-1))][i&1]){
dp[mask][i&1]=1;
break;
}
}
}
if(i==n && dp[mask][i&1])ok=1;
}
}
cout << (ok ? "YES" : "NO");
}
signed main(){
ios_base::sync_with_stdio(0);
cin.tie(0);
int RealName=1;
// cin >> RealName;
while(RealName--)
AlemAmenov();
return 0;
}
