/******************************************************************************
Welcome to GDB Online.
GDB online is an online compiler and debugger tool for C, C++, Python, Java, PHP, Ruby, Perl,
C#, VB, Swift, Pascal, Fortran, Haskell, Objective-C, Assembly, HTML, CSS, JS, SQLite, Prolog.
Code, Compile, Run and Debug online from anywhere in world.
*******************************************************************************/
#include <stdio.h>
#include <iostream>
#include <cstring>
#include <algorithm>
using namespace std;
void Hanoi(int n, char src, char mid, char dest){
if( n == 1){
cout << src <<" -> "<< dest <<endl;
return;
}
Hanoi(n-1, src, dest, mid);
cout << src <<" -> "<< dest <<endl;
Hanoi(n-1, mid, src, dest);
return;
}
int main()
{
int n;
cin >> n;
Hanoi(n, 'a', 'b', 'c');
return 0;
}