#include<bits/stdc++.h>
using namespace std;
int main()
{
int N, M;
cin >> N >> M;
int sala[N], bank[M];
for(int& i: sala) cin >> i;
for(int& i: bank) cin >> i;
vector<int> covered(1<<M, -1); //maximum people covered from this subset
vector<int> leftover(1<<M, -1); //leftover money from this subset
covered[0] = 0; leftover[0] = 0;
for(int mask=1; mask<(1<<M); mask++){
for(int i=0; i<M; i++){
if(!(mask&(1<<i))) continue;
int prev = mask^(1<<i);
if(leftover[prev] == -1) continue;
int target = covered[prev];
if(leftover[prev] + bank[i] < sala[target]){
leftover[mask] = leftover[prev] + bank[i];
covered[mask] = covered[prev];
}
else if(leftover[prev] + bank[i] == sala[target]){
leftover[mask] = 0;
covered[mask] = covered[prev] + 1;
}
}
if(covered[mask] == N){
cout << "YES";
return 0;
}
}
cout << "NO";
}
