#include <bits/stdc++.h>
using namespace std;
// #define int ll
#define MAX LLONG_MAX
#define st first
#define nd second
#define endl '\n'
#define SZ(x) ((int)x.size())
#define ALL(x) x.begin(), x.end()
typedef long long ll;
typedef pair< int, int > ii;
typedef pair< int, ii > iii;
typedef vector< int > vi;
typedef vector< ii > vii;
typedef vector< iii > viii;
typedef vector< vi > vvi;
typedef vector< vii > vvii;
typedef vector< viii > vviii;
int n, m, a;
bool val[1005];
int check[25];
signed main(){
ios_base::sync_with_stdio(0);
cin.tie(0);
cout.tie(0);
cin >> n >> m;
if(n != 1){
cout << "NO";
return 0;
}
cin >> a;
for(int i=1; i<=m; i++) cin >> check[i];
for(int i=1; i<=m; i++){
for(int j=a-check[i]; j>=1; j--){
if(val[j]) val[j+check[i]] = true;
}
val[check[i]] = true;
}
cout << (val[a] ? "YES" : "NO");
}
