#include<bits/stdc++.h>
using namespace std;
using ll=long long;

int main(){
  ll n,k;
  cin>>n>>k;
  if(n==1){
    string s="yuusaan";
    cout<<s[k-1]<<endl;
    exit(0);
  }
  if(n<60){
    ll sz=1;
    for(ll i=0;i<n-1;i++){
      sz+=(1LL<<i);
    }
    if(0<=sz-k&&sz-k<=6){
      string s="yuusaan";
      cout<<s[sz-k]<<endl;
      exit(0);
    }else{
      string s="yuusaanuusaa";
      k--;
      k%=12;
      cout<<s[k]<<endl;
      exit(0);
    }
  }else{
    string s="yuusaanuusaa";
    k--;
    k%=12;
    cout<<s[k]<<endl;
    exit(0);
  }
}