#include <bits/stdc++.h>
using namespace std;
int main() {
     int n;
     cin>>n;
     vector<int> v(n);
     int count=0;
     for(int i=0;i<n;i++){
     	for(int j=0;j<n;j++){
     		for(int k=0;k<n;k++){
     			if(i!=j&&i!=k&&j!=k){
     				cout<<"A:"<<i+1<<" "<<"B:"<<j+1<<" "<<"C:"<<k+1<<endl;
     				count++;
				 }
			 }
		 }
	 }
	 cout<<count<<endl;  
	
	  
	
	
}