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

DP=[0]*(L+1)

for i in range(1,L+1):
    S=set()
    for x in range(1,i):
        for y in range(x+1,i):
            z=i-x-y

            if 1<=x<y<z and z-x<=D:
                S.add(DP[x]^DP[y]^DP[z])

    for j in range(10**9):
        if j in S:
            pass
        else:
            DP[i]=j
            break


if DP[-1]==0:
    print("matsu")
else:
    print("kado")