#include <bits/stdc++.h>
using namespace std;
const int MAX_N = 20, MASK = 1<<20;
int person[MAX_N],bank[MAX_N],max_people[MASK],leftover[MASK];
int main(){
ios::sync_with_stdio(0);
cin.tie(0);
int n,m;
cin >> n >> m;
for (int i=0; i<n; ++i){
cin >> person[i];
}
for (int i=0; i<m; ++i){
cin >> bank[i];
}
memset(max_people,-1,sizeof(max_people));
max_people[0] = 0;
for (int mask=0; mask<(1<<m); ++mask){
if (max_people[mask] == n){
cout << "YES";
return 0;
}
if (max_people[mask] != -1){
for (int banki=0; banki<m; ++banki){
if (!(mask&(1<<banki))){
if (leftover[mask]+bank[banki] == person[max_people[mask]]){
leftover[mask+(1<<banki)] = 0;
max_people[mask+(1<<banki)] = max_people[mask]+1;
}
else if (leftover[mask]+bank[banki] < person[max_people[mask]]){
leftover[mask+(1<<banki)] = leftover[mask]+bank[banki];
max_people[mask+(1<<banki)] = max_people[mask];
}
}
}
}
}
cout << "NO";
return 0;
}
