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  1. a = None
  2. b = None
  3. c = None
  4. d = None
  5. x = None
  6. while True:
  7. a = int(input())
  8. b = int(input())
  9. c = int(input())
  10. d = int(input())
  11. x = int(input())
  12. if a == 0:
  13. print(a)
  14. break
  15. elif b == 0:
  16. print(a + b)
  17. break
  18. elif c == 0:
  19. print(a + b + c)
  20. break
  21. elif d == 0:
  22. print(a + b + c + d)
  23. break
  24. elif x == 0:
  25. print( a + b + c + d + x)
  26. break
  27.  
Success #stdin #stdout 0.02s 9276KB
stdin
1
2
3
4
0
stdout
10