/******************************************************************************
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#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;
}
