#include <bits/stdc++.h>
using namespace std;
const int N = 25, M = (1 << 21);;
int n, m, a[N], b[N], sum[M], dp[2][M];
void input() {
cin >> n >> m;
for (int i = 0; i < n; i++)
cin >> a[i];
for (int i = 0; i < m; i++)
cin >> b[i];
}
void solve() {
for (int i = 1; i < (1 << m); i++)
for (int j = 0; j < m; j++)
if ((i >> j) & 1)
sum[i] += b[j];
int s = 0, maxi = 0;
for (int i = 0; i < n; i++) {
s += a[i];
for (int j = 0; j < (1 << m); j++) {
for (int k = 0; k < m; k++)
if ((j >> k) & 1)
dp[i & 1][j] = max(dp[i & 1][j], dp[i & 1][j - (1 << k)]);
if (sum[j] == s)
dp[i & 1][j]++;
maxi = max(maxi, dp[i & 1][j]);
}
}
if (maxi == n)
cout << "YES";
else
cout << "NO";
}
int main() {
ios:: sync_with_stdio(0), cin.tie(0), cout.tie(0);
input();
solve();
}
