#include <bits/stdc++.h>
using namespace std;

#ifdef _RUTHEN
#include <debug.hpp>
#else
#define show(...) true
#endif

using ll = long long;
#define rep(i, n) for (int i = 0; i < (n); i++)
template <class T> using V = vector<T>;

int main() {
    ios::sync_with_stdio(false);
    cin.tie(0);
    int N, M, L;
    cin >> N >> M >> L;
    V<int> A(N);
    rep(i, N) cin >> A[i];
    V<int> dp(1001, 0);
    dp[L] = 1;
    rep(i, N) {
        V<int> np = dp;
        rep(j, 1001) np[(j + A[i]) / 2] |= dp[j];
        swap(dp, np);
    }
    cout << (dp[M] ? "Yes" : "No") << '\n';
    return 0;
}