import numpy as np


def main():
    N, X, mp = map(int, input().split())
    monsters = np.array(list(map(int, input().split())))
    for idx in reversed(range(N)):
        if monsters[idx] >= X:
            if mp > idx:
                mask = [1]*(idx + 1) + [0]*(N-idx-1)
                monsters[mask] = [hp // 2 for hp in monsters[mask]]
                mp -= (idx + 1)
            else:
                print("No")
                break
    else:
        print("Yes")


if __name__ == "__main__":
    main()