#include <stdio.h>
void move(char x,char y)
{
printf("%c->%c ",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);
}
}
int main()
{
int n;
scanf("%d",&n);
hanoi(n,'A','B','C');
}
