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

bool f[1010][1010];

int main() {
    ios::sync_with_stdio(false);
    cin.tie(nullptr);
    int N,M,L;
    cin >> N >> M >> L;
    f[0][L] = true;
    for(int i = 0; i < N; i++) {
        int A;
        cin >> A;
        for(int j = 0; j <= 1000; j++) {
            if(!f[i][j]) continue;
            f[i+1][j] = true;
            f[i+1][(j+A)/2] = true;
        }
    }
    cout << ((f[N][M])?"Yes":"No") << endl;
}