#include <bits/stdc++.h>

using ll = std::int64_t;

int main(){
    std::cin.tie(nullptr);
    std::ios::sync_with_stdio(false);

    ll N, K;
    std::cin >> N >> K;

    N -= 1;
    K -= 1;

    char res;
    if(K % 6 > 0){
        res = "yuusaa"[K % 6];
    }else{
        res = "yn"[K / 6 % 2];
    }

    std::cout << res << std::endl;
}