#include<bits/stdc++.h>

using namespace std;
vector<long long> len(26,1);
long long N,K;

int slove(int lv,long long count){
    for(int j = 0;j < 7;j++){
        if(j == 0 || j == 3 || j == 6 || lv == 1){
            count++;
        }
        else{
            if(count + len[lv-1] < K){
                count += len[lv - 1];
            }
            else{
                return slove(lv-1,count);
            }
        }

        if(count == K){
            return j;
        }
    }
}

int main(){
    
    long long nowlen = 8;
    for(int j = 1;j <= 25;j++){
        len[j] = nowlen - 1;
        nowlen *= 4;
    }
    
    cin >> N >> K;
    if(N > 25){
        if(N >= K){
            cout << "y" << endl;
            return 0;
        }
        K -= N - 25;
        N = 25;
    }

    int ans = slove(N,0);
    cout << string("yuusaan").substr(ans,1) << endl;
    return 0;
}