#include<bits/stdc++.h>
using namespace std;
#define ll long long
void print(string Z) {
cout << Z << endl;
}
ll arr[23];
ll arr2[23];
ll ps[23];
bool flag[23];
ll N, M;
bool check(ll idx, ll nd, ll ret) {
if(ret == nd) {
flag[idx-1] = 1;
check(0, nd-arr2[idx-1], ret);
return 1;
}
else if(flag[idx]) {
return check(idx+1, nd, ret);
}
else if(idx > M || ret > nd) {
return 0;
}
else {
return (check(idx+1, nd, ret+arr2[idx]) || check(idx+1, nd, ret));
}
}
int main() {
ios_base::sync_with_stdio(0);
cin.tie(0);
cout.tie(0);
cin >> N >> M;
for(int i=0; i<N; i++) {
cin >> arr[i];
}
for(int i=0; i<M; i++) {
cin >> arr2[i];
if(i == 0) {
ps[i] = arr2[i];
}
else {
ps[i] = ps[i-1] + arr2[i];
}
}
sort(arr2, arr2+M);
bool X = 1;
for(int i=0; i<N; i++) {
X = X && check(0, arr[i], 0);
}
if(X) {
print("YES");
}
else {
print("NO");
}
return 0;
}
