import numpy as np


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

    else:
        print("Yes")


if __name__ == "__main__":
    main()