l, d = map(int, input().split())

g_list = [0] * (l + 1)
for i in range(6, l + 1):
    g_set = [False] * (i + 1)
    for l1 in range(1, i // 3):
        for l2 in range(max(l1 + 1, i - 2 * l1 - d), int((i - l1) / 2 + 0.5)):
            l3 = i - l1 - l2
            g_set[g_list[l1] ^ g_list[l2] ^ g_list[l3]] = True
    for r in range(i):
        if not g_set[r]:
            g_list[i] = r
            break

if g_list[l] == 0:
    print('matsu')
else:
    print('kado')