#include <bits/stdc++.h>
using namespace std;
using ll = long long;
#define pb push_back
#define dbg(x) cerr << #x << " " << x << "\n"
const int MX = 1e3, MAX_N = 20;
const int MAX_SUM = MAX_N * MX;
int salary[1 + MAX_N];
int sum[1 + MAX_N];
int bill[MAX_N];
int progress[1 + MAX_SUM];
bool dp[1 << MAX_N];
int main () {
ios::sync_with_stdio (false);
cin.tie (0); cout.tie (0);
int n, m;
cin >> n >> m;
for (int i = 1; i <= n; i++) {
cin >> salary[i];
sum[i] = sum[i - 1] + salary[i];
progress[sum[i]] = i;
}
for (int i = 1; i <= MAX_SUM; i++)
if (not progress[i])
progress[i] = progress[i - 1];
for (int i = 0; i < m; i++)
cin >> bill[i];
dp[0] = true;
bool good = false;
for (int mask = 0; mask < (1 << m); mask++) {
if (dp[mask]) {
int paid = 0;
for (int i = 0; i < m; i++)
if (mask & (1 << i))
paid += bill[i];
for (int i = 0; i < m; i++)
if (not (mask & (1 << i))) {
int new_paid = paid + bill[i];
int new_mask = mask ^ (1 << i);
if (progress[paid] == progress[new_paid])
dp[new_mask] = true;
else {
if (progress[paid] + 1 == progress[new_paid] && sum[progress[new_paid]] == new_paid) {
dp[new_mask] = true;
if (progress[new_paid] == n)
good = true;
}
}
}
}
}
if (good)
cout << "YES\n";
else
cout << "NO\n";
return 0;
}
