Ruudukko

input/code.cpp: In function 'int main()':
input/code.cpp:11:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d", &n);
  ~~~~~^~~~~~~~~~

#include <iostream>

using namespace std;

int main()
{
	ios_base::sync_with_stdio(0);
	cin.tie(0);

	int n;
	scanf("%d", &n);

	for (int x = 1; x <= n; x++) {
		for (int y = 1; y <= n; y++) {

			cout << ((x - 1) ^ (y - 1)) + 1 << " ";
		}
		cout << "\n";
	}
	return 0;	

}

Test 1

Verdict: ACCEPTED

Test 2

Verdict: ACCEPTED

Test 3

Verdict: ACCEPTED

Test 4

Verdict: ACCEPTED

Test 5

Verdict: ACCEPTED

Test 6

Verdict: ACCEPTED