#include<bits/stdc++.h>
#define pb push_back
#define int long long
#define S second
#define F first
#define ahah ios_base::sync_with_stdio(false);cin.tie(0);cout.tie(0);
using namespace std;
const int N=1e6+7;
const int MOD=1e9+7;
int a[N];
signed main() {
ahah
int n,m;
cin >> n >> m;
int x;
cin >> x;
for(int i = 1 ; i <= m ; i++){
cin >> a[i];
}
for(int i = 0 ; i < (1 << m) ; i++){
int cnt=0;
for(int j = 0 ; j < m ; j++){
if(i&(1 << j)){
cnt+=a[j+1];
}
}
if(cnt == x){
cout << "YES";
return 0;
}
}
cout << "NO";
}
