#include<bits/stdc++.h>
	using namespace std;
	int n, a[15][15], j, i, s, z;
	int main() {
		cin >> n >> i >> j;
		z = j + i;
		s =  i- j;
		for (int q = 1; q <= n; q++) {
			cout << "(" << i << "," << q << ")" << " ";
		}
		cout << endl;
		for (int q = 1; q <= n; q++) {
			cout << " (" << q << "," << j << ")" << " ";
		}
		cout << endl;
		for (int q = 1; q <= n; q++) {
			for (int k = 1; k <= n; k++)
				if (q - k == s) {
					cout << "(" << q << "," << k << ")" << " ";
				}
		}
			cout << endl;
		for (int q = 1; q <= n; q++) {
			for (int k = 1; k <= n; k++)
				if (q + k == z) {
					cout << "(" << k << "," << q << ")" << " ";
				}
		}
	
	
	
		return 0;
	}

测试点