obstacleSet = set([(10, 2, 4, 5), (3, 4), (4, 4), (5, 4)])
print((2, 4) in obstacleSet)
print(obstacleSet)

print(set([(1, 2), (3, 4)]))

obstacleSet = set([(10, 2, 4, 5), (3, 4), (4, 4), (5, 4)])
print((2, 4) in obstacleSet)
print(obstacleSet)

print(set([(1, 2), (3, 4)]))
