import sys
input = lambda: sys.stdin.readline().rstrip()

def main():
    # 入力
    N, M, L = map(int, input().split())
    # 計算・出力
    dp = [False] * 1001
    dp[L] = True
    for a in list(map(int, input().split())):
        d = [False] * 1001
        for i in range(1001):
            if dp[i]:
                d[i] = True
                d[(i+a)//2] = True
        dp = d
    print('Yes' if dp[M] else 'No')

if __name__ == "__main__":
    main()