#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define maxn 21
#define FOR(i , a , b) for(int i = a ; i <= b; i++)
#define FAST ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
#define BIT(mask , i) (mask >> i & 1)
ll a[maxn] , b[maxn] , cost[1 << maxn];
int dp[1 << maxn];
int main(){
FAST;
int n , m;
cin >> n >> m;
FOR(i , 0 , n - 1) cin >> a[i];
FOR(i , 0 , m - 1) cin >> b[i];
ll sumA = 0; FOR(i , 0 , n - 1) sumA += a[i];
ll sumB = 0; FOR(j , 0 , m - 1) sumB += b[j];
if(sumA > sumB){cout << "NO\n"; return 0;}
FOR(mask , 1 , (1 << m) - 1){
int lsb = mask & (-mask);
int j = __builtin_popcount(lsb);
cost[mask] = cost[mask ^ lsb] + b[j];
}
FOR(mask , 0 , (1 << m) - 1) dp[mask] = -1;
dp[0] = 0;
int full_mask = (1 << m) - 1;
FOR(mask , 0 , (1 << m) - 1){
int k = dp[mask];
if(k < 0 || k == n) continue;
int tmp = full_mask ^ mask;
for(int submask = tmp ; true ; submask = (submask - 1) & tmp){
if(cost[submask] == a[k]){
int new_mask = mask | submask;
dp[new_mask] = max(dp[new_mask] , k + 1);
}
if(submask == 0) break;
}
}
bool ok = false;
FOR(mask , 0 , (1 << m) - 1) if(dp[mask] == n){
ok = true;
break;
}
cout << (ok ?"YES" :"NO");
}
