#include <stdio.h>
#include <stdlib.h>

void FirstCase(int n, int k) {
	int i, help = n * n, c = k, j;
	FILE *g;
	g = fopen("out.txt", "w");
	for (i = 1; i <= n; i++) {
		if(i <= k)
			fprintf(g, "%d ", k - i + 1);
		else
			fprintf(g, "%d ",help--);
		if(i % 2)
		  for (j = 2; j <= n; j++)
			fprintf(g, "%d ", ++c);
		else {
			c = c + n;
			for (j = 2; j <= n; j++)
				fprintf(g, "%d ", --c);
			c = c + n - 2;
		}
		fprintf(g, "\n");
	}

}


int main() {
	int n, k;
	FILE *f;
	f = fopen("in.txt", "r"); // deschidere mod citire
	fscanf(f, "%d%d", &n, &k);
	fclose(f);
	if (n % 2 == 0 || k == n)
		FirstCase(n, k);

	return 0;
}