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40 changes: 40 additions & 0 deletions src/Homework #5/Code style and linters/styled_biggest_homework.py
Original file line number Diff line number Diff line change
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# Функция проверки корректности размещения ферзей по вертикали и диагонали
def is_safe_direction(
coordinate_1: tuple[int, int], coordinate_2: tuple[int, int]
) -> bool:
if coordinate_1[1] == coordinate_2[1] or abs(
coordinate_1[1] - coordinate_2[1]
) == abs(coordinate_1[0] - coordinate_2[0]):
return False
return True


N = int(input("Enter the value N: "))

board_size = N**2

counter = 0

# Цикл перебора сочетаний ферзей по три
stack: list[list[tuple[int, int]]] = [[]]
while stack:
# Нынешнее сочетание ферзей
placements: list[tuple[int, int]] = stack.pop()

if len(placements) == N:
counter += 1
else:
current_row = len(placements)
# Перебор возможных ферзей в пределах одной горизонтали
for column in range(N):
# Проверка, возможно ли такое сочетание для каждой уже размещенной фигуры
for placement_column, placement_row in placements:
if not is_safe_direction(
(placement_column, placement_row), (current_row, column)
):
break
else:
# Добавление сочетания, если такое возможно
stack.append(placements + [(current_row, column)])

print(f"The number of possible different arrangements is {counter}")
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