#include<iostream> using namespace std; int a[101][101]; int n; int main() { cin >> n; int i = 1; int x = 1; int y = n; while (i <= n * n) { //1 while (x >= 1 && x <= n && y >= 1 && y <= n && a[x][y] == 0) { a[x][y] = i; i++; x++; } x--; y--; //2 while (x >= 1 && x <= n && y >= 1 && y <= n && a[x][y] == 0) { a[x][y] = i; i++; y--; } y++; x--; //3 while (x >= 1 && x <= n && y >= 1 && y <= n && a[x][y] == 0) { a[x][y] = i; i++; x--; } x++; y++; //4 while (x >= 1 && x <= n && y >= 1 && y <= n && a[x][y] == 0) { a[x][y] = i; i++; y++; } y--; x++; } for (int i = 1; i <= n; i++) { for (int j = 1; j <= n; j++) { cout << a[i][j] << " "; } cout << endl; } return 0; }