#include <iostream>
#include <vector>
using namespace std;
int main() {
int n, m;
cin >> n >> m;
vector<int> targets(n);
vector<int> banknotes(m);
for(int i = 0; i < n; ++i) {
cin >> targets[i];
}
for(int i = 0; i < m; ++i) {
cin >> banknotes[i];
}
// vector<vector<int>> possiblem(n); // possible masks of banknotes for each target
// for(int i = 0; i < n; ++i) {
// for(int s = 1; s < (1 << m); ++s) {
// int money = 0;
// for(int j = 0; j < m; ++j) {
// if(s & (1 << j)) {
// money += banknotes[j];
// }
// }
// if(money == targets[i]) {
// possiblem[i].push_back(s);
// }
// }
// }
vector<int> num_paid((1 << m), -1); // number of people covered
vector<int> unused((1 << m), -1); // amount of money unused
num_paid[0] = 0;
unused[0] = 0;
bool answered = false;
for(int mask = 0; mask < (1 << m); ++mask) {
for(int next = 0; next < m; ++next) {
if((mask & (1 << next)) == 0) {
// cout << "next: " << next << endl;
// cout << mask << ": broke" << endl;
continue;
}
// cout << mask << ": didn't break" << endl;
int prevm = (mask ^ (1 << next));
// cout << "prevm: " << prevm << endl;
if(num_paid[prevm] != -1) {
// cout << "prevm isn't -1" << endl;
int money = unused[prevm] + banknotes[next];
if(money < targets[num_paid[prevm]]) {
num_paid[mask] = num_paid[prevm];
unused[mask] = money;
}
else if(money == targets[num_paid[prevm]]) {
num_paid[mask] = num_paid[prevm] + 1;
unused[mask] = 0;
}
else if(unused[prevm] == targets[num_paid[prevm]]) {
num_paid[mask] = num_paid[prevm] + 1;
unused[mask] = banknotes[next];
}
}
}
if(num_paid[mask] == n) {
cout << "YES" << endl;
answered = true;
break;
}
}
for(int i = 0; i < (1 << m); ++i) {
// cout << i << ": " << num_paid[i] << " " << unused[i] << endl;
}
if(!answered) {
cout << "NO" << endl;
}
}
