#include <bits/stdc++.h>
using namespace std;
using ll = long long;
const int INF = 1e9 + 10;
const ll INFL = 4e18;

int main() {
    ll N, K;
    cin >> N >> K;
    K--;

    ll rem = K % 6;
    ll cnt = K / 6;

    if (rem != 0) {
        cout << "yuusaan"[rem] << endl;
    } else {
        cout << (cnt % 2 == 0 ? 'y' : 'n') << endl;
    }
}