L, D = map(int, input().split())

# L1 < L2 < L3, L3 - L1 <= D, L1 + L2 + L3 = L

grundy = [0] * (L + 1)

for l in range(6, L+1):
    tmp = set()
    for l1 in range(1, l//3 + 1):
        for l2 in range(l1 + 1, l):
            l3 = l - l1 - l2
            if l3 <= l2:
                break
            if l3 - l1 > D:
                continue
            tmp.add(grundy[l1] ^ grundy[l2] ^ grundy[l3])
        
    g = 0
    while g in tmp:
        g += 1
    grundy[l] = g

if grundy[L] == 0:
    print('matsu')
else:
    print('kado')