#include using namespace std; int n, m, cm, nr; bool a[1001]; int main() { cin >> n; m = n * (n + 1) / 2; if (m % 3 != 0) cout << "NU"; else { m = m / 3, nr = 3; while (nr) { cm = m; for (int i = n; i >= 1 && cm; --i) if (!a[i] && (cm - i) >= 0) { cout << i << " "; cm = cm - i; a[i] = true; } cout << "\n"; nr--; } } return 0; }