#include <iostream> #include <iomanip> using namespace std;

int main() { int n; cin >> n; for (int i = 0; i < n; i++) { for (int j = 0; j < n; j++) { char c = 'A' + (i + j) % n; cout << setw(3) << c; } cout << endl; } return 0; }
/**************************************************************
	Problem: 1194
	User: linzihang
	Language: C++
	Result: Compile Error
****************************************************************/