#include <bits/stdc++.h>
using namespace std;
#include <atcoder/all>
using namespace atcoder;
using ll = long long;
#define rep(i, n) for (ll i = 0; i < ll(n); i++)

int main(){
    int n,m,l;
    cin >> n >> m >> l;
    vector<int> a(n);
    rep(i,n) cin >> a[i];
    set<int> seen;
    bool ok = false;
    auto dfs = [&](auto &dfs,int v,int col) -> void {
        if(seen.count(col)) return;
        seen.insert(col);
        if(col == m) ok = true;
        for(int i = v+1;i < n;i++){
            dfs(dfs,i,(a[i]+col)/2);
        }
    };
    dfs(dfs,0,l);
    if(ok) cout << "Yes" << endl;
    else cout << "No" << endl;
}