GAA

/*
    Task    : _example
    Author  : Phumipat C. [MAGCARI]
    Language: C++
    Created : 20 February 2023 [21:36]
*/
#include<bits/stdc++.h>
using namespace std;
char ans;
void play(int l,int r,int target,int k){
    if(r-l+1 == 3){
        if(target == l) ans = 'g';
        else            ans = 'a';
        return ;
    }
    int sz = (r-l+1 - (k+3)) / 2;
    if(target <= l + sz - 1)                play(l,l+sz-1,target,k-1);
    else if(target <= l + sz - 1 + (k+3)){
        if(target == l + sz)    ans = 'g';
        else                    ans = 'a';
        return ;
    }else{
        play(l + sz + (k+3),r,target,k-1);
    }
}
int main(){
    cin.tie(0)->sync_with_stdio(0);
    cin.exceptions(cin.failbit);
    int target;
    cin >> target;
    int n = 3,k = 0;
    while(n < target)   k++,n = (2*n) + (k+3);
    play(1,n,target,k);
    cout << ans << '\n';
    return 0;
}