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  1. input_line = input().split()
  2. size = int(input_line[0])
  3. obj_sum = int(input_line[1])
  4.  
  5. numbers = list(map(int, input().split()))
  6. output = "NO"
  7. numbers_dict = {}
  8. for number in numbers:
  9. 	if number not in numbers_dict: numbers_dict[number] = 1
  10. 	else: numbers_dict[number] += 1
  11.  
  12. for number in numbers:
  13. 	if (obj_sum-number) in numbers_dict:
  14. 		if (obj_sum-number) == number and numbers_dict[number] == 1: continue
  15. 	output = "YES"
  16.  
  17. print(output)
Success #stdin #stdout 0.02s 27616KB
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stdin
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5 9
1 2 3 4 5
stdout
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YES
https://ideone.com/DbsG3y
language:
Python 3 (python  3.9.5)
created:
5 years ago
visibility:
public

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