#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
int n, m, a[25], b[25], sum_masks[(1<<20)+5], suffixsum[20+5];
int dp[20+5][(1<<20)+5];
bool cmp (int x, int y)
{
return x>y;
}
int dfs(int idx, int remmask)
{
if (idx == n) return 1; //went through all ns
if (sum_masks[remmask] < suffixsum[idx]) return 0;
int &v = dp[idx][remmask];
if (v != -1) return v;
for (int sub = remmask; sub; sub = (sub-1) & remmask)
{
if (sum_masks[sub] == a[idx])
{
if (dfs(idx+1, sub^remmask)) return v = 1;
}
}
return v = 0;
}
void solve()
{
cin >> n >> m;
for (int i = 0; i<n; ++i) cin >> a[i];
for (int i = 0; i<m; ++i) cin >> b[i];
for (int i = 0; i<n; ++i)
{
for (int j = 0; j<(1<<m); ++j) dp[i][j] = -1;
}
int A = 1<<m;
sort(a, a+n, cmp);
for (int i = 0; i<A; ++i)
{
sum_masks[i] = 0;
for (int j = 0; j<m; ++j)
{
if (i&(1<<j)) sum_masks[i] += b[j];
}
}
suffixsum[n] = 0;
for (int i = n-1; i>=0; --i)
{
suffixsum[i] = suffixsum[i+1] + a[i];
}
if (dfs(0, A-1)) cout << "YES";
else cout << "NO";
}
int main()
{
ios_base::sync_with_stdio(false);
cin.tie(0); cout.tie(0);
solve();
return 0;
}
