#include<iostream>
#include<cstdio>
#include<cmath>
#define N 18
#define eps 1e-7
using namespace std;
int read()
{
    char c=0;
    int sum=0;
    while (c<'0'||c>'9') c=getchar();
    while ('0'<=c&&c<='9') sum=sum*10+c-'0',c=getchar();
    return sum;
}
int n,delta[N+1];
double X[N+1],Y[N+1];
const double Pi=asin(1)*2;
int main()
{
    int cnt,rst,d;
    double sx,sy;
    n=read();
    for (int i=1;i<=n;++i) X[i]=cos(2*i*Pi/n),Y[i]=sin(2*i*Pi/n);
    for (int i=1;i<=n;++i)
    {
	for (int j=0;j<(1<<(n-1));++j)
	{
	    sx=sy=cnt=rst=d=0;
	    for (int k=1;k<=n;++k)
		if (i!=k)
		    delta[k]=(j>>cnt)&1,cnt++;
	    cnt=1;
	    for (int k=i+1;k<=n;++k)
	    {
		if (delta[k]) rst++,sx+=X[cnt],sy+=Y[cnt];
		cnt++;
	    }
	    for (int k=1;k<=i-1;++k)
	    {
		if (delta[k]) rst++,sx+=X[cnt],sy+=Y[cnt];
		cnt++;
	    }
	    if (abs(sy)<eps) d=abs(sx)>=eps;
	    else d=(sy<0)^(rst&1);
	    printf("%c",(!d)?'B':'C');
	}
	puts("");
    }
    return 0;
}