#[allow(unused_imports)]
use std::cmp::*;
#[allow(unused_imports)]
use std::collections::*;

fn read<T: std::str::FromStr>() -> T {
    let mut s = String::new();
    std::io::stdin().read_line(&mut s).ok();
    s.trim().parse().ok().unwrap()
}

fn read_vec<T: std::str::FromStr>() -> Vec<T> {
    read::<String>()
        .split_whitespace()
        .map(|e| e.parse().ok().unwrap())
        .collect()
}

fn grundy(l: usize, d: usize, mem: &mut Vec<i32>) -> i32 {
    if mem[l] != -1 {
        return mem[l];
    }
    if l <= 2 {
        mem[l] = 0;
        return 0;
    }
    let mut s = HashSet::new();
    for l1 in 1..l - 2 {
        for l2 in l1 + 1..l - 2 {
            if l1 + l2 >= l - 1 {
                continue;
            }
            let l3 = l - l1 - l2;
            if l3 == l1 || l3 == l2 {
                continue;
            }
            let max_l = max(l2, l3);
            let min_l = min(l1, l3);
            if max_l - min_l > d {
                continue;
            }
            s.insert(grundy(l1, d, mem) ^ grundy(l2, d, mem) ^ grundy(l3, d, mem));
        }
    }
    let mut res = 0;
    while s.contains(&res) {
        res += 1;
    }
    mem[l] = res;
    res
}

fn main() {
    let v: Vec<usize> = read_vec();
    let (l, d) = (v[0], v[1]);
    let mut mem = vec![-1; l + 1];
    if grundy(l, d, &mut mem) == 0 {
        println!("matsu");
    } else {
        println!("kado");
    }
}