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  1. """
  2. author @ Mobarak Hosen Shakil
  3. Dept. of ICE, Islamic University
  4. Kushtia, Bangladesh
  5.  
  6. File Name: toph.py
  7. Created on: 2:57 PM, 10 - 02 - 2019
  8.  
  9. """
  10.  
  11. n, m = map(int, input().split())
  12.  
  13. s1 = list(map(int, input().split()))
  14. s2 = list(map(int, input().split()))
  15.  
  16. p1 = set(s1)
  17. p2 = set(s2)
  18.  
  19. ans = p1 | p2
  20. res = list(ans)
  21. res.sort()
  22.  
  23. for x in res:
  24. print(x, ' ', end="")
  25.  
Success #stdin #stdout 0.01s 27704KB
stdin
5 5
1 3 5 7 8
2 3 4 7 9
stdout
1  2  3  4  5  7  8  9