from sys import stdin def sortBy2 input return input int stdin readlin

  • Anonymous
  • Python
  • 13 May 2015 
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from sys import stdin







def sortBy2(input):

        return input[2]



n = int(stdin.readline().strip())



points = []

for i in range(n):

    point = stdin.readline().strip().split(" ")

    x = int(point[0])

    y = int(point[1])

    dist = x ** 2 + y ** 2

    points.append((x, y, dist))

points.sort(key=sortBy2)



for i in points:

    print(str(i[0]) + " " + str(i[1]))
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