#include <bits/stdc++.h>
using namespace std;
int main(void){
    long long n,k;
    cin>>n>>k;
    string s="yuusaan";
    if((k-1)%6!=0){
        cout<<s[(k-1)%6]<<endl;
    }else{
        cout<<((k-1)%12==0?"y":"n")<<endl;
    }
    return 0;
}