#include <bits/stdc++.h>
using namespace std;
int main() {
int n,m,b[100],a[100];
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 mask = 1; mask < (1 << m); mask++) {
int x = 0;
for (int i = 0; i < m; i++) {
if (mask & (1 << i)) {
x += b[i];
}
}
if (x == a[0]) {
cout << "YES";
return 0;
}
}
}
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