#include <bits/stdc++.h>
#define int long long
using namespace std;
signed main() {
ios::sync_with_stdio(false);
cin.tie(0);
int n, m;
cin >> n >> m;
vector<int> a(n);
vector<int> b(m);
for(int i = 0; i < n; i++) {
cin >> a[i];
}
for(int i = 0; i < m; i++) {
cin >> b[i];
}
int dp[n][(1LL << m)];
for(int i = 0; i < n; i++) {
for(int j = 0; j < (1LL << m); j++) {
dp[i][j] = 0;
}
}
for(int i = 0; i < n; i++) {
for(int j = 0; j < (1LL << m); j++) {
int s = 0;
for(int q = 0; q < m; q++) {
if(j & (1LL << q)) {
s += b[q];
}
}
if(s == a[i]) {
if(!i) {
dp[i][j] = 1;
continue;
}
for(int bitmask = 0; bitmask < (1LL << m); bitmask++) {
if((bitmask & j)) {
continue;
}
dp[i][j ^ bitmask] |= dp[i - 1][bitmask];
}
}
}
}
int ok = 0;
for(int i = 0; i < (1LL << m); i++) {
ok |= dp[n - 1][i];
}
if(ok) {
cout << "YES";
}
else {
cout << "NO";
}
}
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