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

ans=[0 for i in range(L+1)]
for i in range(6,L+1):
    grundies=[]
    for j in range(1,i+1):
        for k in range(j+1,i+1):
            l=i-j-k
            if l<=k: 
                continue
            if l-j > D:
                continue
            num=ans[j]^ans[k]^ans[l]
            grundies.append[num]
    grundies=set(grundies)
    while True:
        if ans[i] not in grundies:
            break
        ans[i]+=1
if ans[L]==0:
    print "matsu"
else:
    print "kado"