#include <bits/stdc++.h>
#pragma GCC optimize("O3,unroll-loops")
#pragma GCC target("avx2,bmi,bmi2,lzcnt,popcnt")
#define bupol __builtin_popcount
#define ll long long
#define ld long double
#define fi first
#define se second
#define pb push_back
#define lf (id<<1)
#define rg ((id<<1)|1)
#define md ((l+r)>>1)
using namespace std;
const int MAXN = (1<<20)+5;
const int LOG = 20;
const int MOD = 1e9+7;
const int SQRT = 520;
typedef pair<int,int> pii;
typedef pair<int,pii> ipii;
int n, m;
int a[25], b[25];
int dp[MAXN], le[MAXN];
signed main(){
ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);
cin >> n >> m;
for(int i=1; i<=n; i++) cin >> a[i];
for(int i=0; i<m; i++) cin >> b[i];
memset(dp, -1, sizeof dp);
dp[0] = 0; le[0] = 0;
for(int mask=1; mask<(1<<m); mask++){
for(int i=0; i<m; i++){
if((mask>>i) & 1){
int pre = mask ^ (1<<i);
int prans = dp[pre];
if(le[pre]+b[i] == a[prans+1]){
dp[mask] = prans+1;
le[mask] = 0;
} else if(le[pre]+b[i] < a[prans+1]){
dp[mask] = prans;
le[mask] = le[pre]+b[i];
}
}
}
if(dp[mask] == n){
cout << "YES\n"; exit(0);
}
}
cout << "NO\n";
}
