Mana sonlar qatori: 1, 19, 3, 17, 4, 15, 9, 12, 7, 10, 13, 8, 11, 14, 6, 16, 4, 18, 2, 20. Ayting-chi, ushbu qatorni zabt etish uchun qanday turdagi qurol va qancha miqdorda kerak boʻladi?