#include <bits/stdc++.h>
using namespace std;
using ll = long long;
using pll = pair<ll, ll>;
#define drep(i, cc, n) for (ll i = (cc); i <= (n); ++i)
#define rep(i, n) drep(i, 0, n - 1)
#define all(a) (a).begin(), (a).end()
#define pb push_back
#define fi first
#define se second

const ll MOD = 1000000007;
const ll MOD2 = 998244353;
const ll INF = 1LL << 60;
const ll N_MAX = 2e5;

int main(){
    ll n, x, y;
    cin >> n >> x >> y;

    vector<ll> r(n);
    ll sum = 0;
    rep(i, n){
        cin >> r[i];
        sum += 2*r[i];
    }

    if(sum*sum >= x*x + y*y) cout << "Yes" << endl;
    else cout << "No" << endl;
}