#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
#include "bits/stdc++.h"
#define int long long
#define endl '\n'
#define Bismillah ios_base::sync_with_stdio(0);cin.tie(0);
#define indexed_set tree<int, null_type, less<int>, rb_tree_tag, tree_order_statistics_node_update>
using namespace std;
using namespace __gnu_pbds;
const int N = 5e5 + 7;
const int INF = 1e18;
const int MOD = 998244353;
int n , m , a[101] , b[101];
signed main()
{
Bismillah;
// freopen("bank.in" , "r" , stdin);
// freopen("bank.out" , "w" , stdout);
cin >> n >> m;
cin >> a[1];
for(int i = 0; i < m; i++)
{
cin >> b[i];
}
for(int bit = 1; bit < (1 << m); bit++)
{
int sum = 0;
for(int i = 0; i < m; i++)
{
if(bit & (1 << i)) sum += b[i];
}
if(sum == a[1])
{
cout << "YES" << endl; return 0;
}
}
cout << "NO" << endl;
}
