a, b = map(int, input().split(" "))

memo = {}


def win(i: int, j: int) -> bool:
    # print(f"kirby: {i}, {j}")
    if i < j:
        return win(j, i)

    if j == 1:
        return True
    if j <= 0:
        return False
    if (i, j) in memo:
        return memo[(i, j)]

    memo[(i, j)] = not win(i - 1, j) or not win(i, j - 1)
    return memo[(i, j)]


if win(a, b):
    print("Kirby")
else:
    print("Dedede")