#include"stdio.h" 
#include "stdlib.h"
void move(char x,char y)
{
 printf("%c-->%c\n",x,y);
}
void hanoi(int n,char one,char two,char three)
{
 if(n==1) move(one,three);
 else
 {
  hanoi(n-1,one,three,two);
  move(one,three);
  hanoi(n-1,two,one,three);
 }
}
main()
{
 int n;
 scanf("%d",&n);
 hanoi(n,'A','B','C');
 system("pause");
}