#ifdef LOCAL
#include ".debug.hpp"
#else
#define debug(...) 42
#endif
#pragma GCC optimize("Ofast")
#include <bits/stdc++.h>
#include <ext/pb_ds/tree_policy.hpp>
#include <ext/pb_ds/assoc_container.hpp>
using namespace __gnu_pbds;
using namespace std;
using ordered_set = tree<int, null_type, less<int>, rb_tree_tag, tree_order_statistics_node_update>;
signed main() {
#ifndef VOID
cin.tie(nullptr)->sync_with_stdio(false);
#endif
int N, M; cin >> N >> M;
vector<int> A(N), B(M);
for (auto &a : A) cin >> a;
for (auto &b : B) cin >> b;
vector<int64_t> dp(1 << M), rem(1 << M);
int j = 0;
for (int mask = 0; mask < (1 << M); mask++) {
if (dp[mask] == N) {
cout << "YES";
return 0;
}
if (j == N) {
cout << "YES";
return 0;
}
for (int i = 0; i < M; i++) {
if (mask & (1 << i)) continue;
if (rem[mask] + B[i] == A[j]) dp[mask | (1 << i)] = max(dp[mask | (1 << i)], dp[mask] + 1), rem[mask | (1 << i)] = 0, j++;
else rem[mask | (1 << i)] += B[i], dp[mask | (1 << i)] = max(dp[mask | (1 << i)], dp[mask]);
}
}
cout << "NO";
return 0;
}
