#include "sylib.h" int ans[50], sum = 0, n; int row[50], line1[50], line2[100]; void printans() { sum = sum + 1; int i = 1; while (i <= n) { putint(ans[i]); if (i == n) { putch(10); return; } else putch(32); i = i + 1; } } void f(int step) { int i = 1; while (i <= n) { if (row[i] != 1 && line1[step + i] == 0 && !line2[n + step - i]) { ans[step] = i; if (step == n) printans(); row[i] = 1; line1[step + i] = 1; line2[n + step - i] = 1; f(step + 1); row[i] = 0; line1[step + i] = 0; line2[n + step - i] = 0; } i = i + 1; } } int main() { int N = getint(); while (N > 0) { n = getint(); f(1); N = N - 1; } return sum; }