
def 				UpperCAmelCase_						(				__SCREAMING_SNAKE_CASE				):
	lowercase	    =       [0] * len(__SCREAMING_SNAKE_CASE				)
	lowercase	    =       []
	lowercase	    =       [1] * len(__SCREAMING_SNAKE_CASE				)

	for values in graph.values():
		for i in values:
			indegree[i] += 1

	for i in range(len(__SCREAMING_SNAKE_CASE				)				):
		if indegree[i] == 0:
			queue.append(__SCREAMING_SNAKE_CASE				)

	while queue:
		lowercase	    =       queue.pop(0				)
		for x in graph[vertex]:
			indegree[x] -= 1

			if long_dist[vertex] + 1 > long_dist[x]:
				lowercase	    =       long_dist[vertex] + 1

			if indegree[x] == 0:
				queue.append(__SCREAMING_SNAKE_CASE				)

	print(max(__SCREAMING_SNAKE_CASE				)				)


# Adjacency list of Graph
UpperCAmelCase       =					{0: [2, 3, 4], 1: [2, 7], 2: [5], 3: [5, 7], 4: [7], 5: [6], 6: [7], 7: []}





longest_distance(graph)







'''simple docstring'''


from __future__ import annotations

import math
def 						lowerCamelCase__   (				a    ,	a							):
						__snake_case						 =   u
						for i in range(1    ,	a							):
												__snake_case						 =   temp * (u - i)
						return temp
def 						lowerCamelCase__   (				):
						__snake_case						 =   int(input('enter the numbers of values: '							)							)
						__snake_case						 =   []
						for _ in range(a							):
												y.append([]							)
						for i in range(a							):
												for j in range(a							):
																		y[i].append(a							)
																		__snake_case						 =   0

						print('enter the values of parameters in a list: '							)
						__snake_case						 =   list(map(a    ,	input().split()							)							)

						print('enter the values of corresponding parameters: '							)
						for i in range(a							):
												__snake_case						 =   float(input()							)

						__snake_case						 =   int(input('enter the value to interpolate: '							)							)
						__snake_case						 =   (value - x[0]) / (x[1] - x[0])

						# for calculating forward difference table

						for i in range(1    ,	a							):
												for j in range(n - i							):
																		__snake_case						 =   y[j + 1][i - 1] - y[j][i - 1]

						__snake_case						 =   y[0][0]
						for i in range(1    ,	a							):
												summ += (ucal(a    ,	a							) * y[0][i]) / math.factorial(a							)

						print(f'the value at {value} is {summ}'							)


if __name__ == "__main__":
	main()

