#include <iostream>using namespace std;int main() { int n, i, j, x, y, nx, ny; int a[40][40]; for (i = 0; i < 40; i++) for (j = 0; j < 40; j++) a[i][j] = 0; cin >> n; y = 0; x = n - 1; n = 2 * n - 1; for (i = 1; i <= n * n; i++) { a[y][x] = i; ny = (y - 1 + n) % n; nx = (x + 1) % n; if ((y == 0 && x == n - 1) || a[ny][nx] != 0) y = y + 1; else { y = ny; x = nx; } } for (j = 0; j < n; j++) cout << a[0][j] << " "; cout << endl; return 0;}输入：3 输出：_________