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  1. n = int(input())
  2. min_x = 10001
  3. max_x = -10001
  4. min_y = 10001
  5. max_y = -10001
  6. for i in range(n):
  7. ulaz = input().split()
  8. x = int(ulaz[0])
  9. y = int(ulaz[1])
  10. if x < 0 or y < 0:
  11. continue
  12. min_x = min(min_x, x)
  13. max_x = max(max_x, x)
  14. min_y = min(min_y, y)
  15. max_y = max(max_y, y)
  16. print(min_x, min_y)
  17. print(max_x, min_y)
  18. print(min_x, max_y)
  19. print(max_x, max_y)
Success #stdin #stdout 0.09s 14172KB
stdin
3
10 30
7 20
-14 25
stdout
7 20
10 20
7 30
10 30