using namespace std;
int n;
char a,b,c;
void hanoi(int n,char start,char middle,char end){
	if(n==0) return ;
	hanoi(n-1,start,end,middle);
	cout << start << "->" << n << "->" << end << endl;
	hanoi(n-1,middle,start,end);
}
int main(){
	cin >> n >> a >> b >> c;
	hanoi(n,a,c,b);
}