fork download
copy 
  1. # your code goes here
  2.  
  3. def func(arr, K):
  4. 	result = 0
  5.  
  6. 	freq = {}
  7.  
  8. 	for n in arr:
  9. 		if K-n in freq:
  10. 			result += freq[K-n]
  11. 		freq[num] = freq.get(num, 0)+1
  12.  
  13. 	return result
Success #stdin #stdout 0.1s 14116KB
comments (?)
stdin
copy 
Standard input is empty
stdout
copy 
Standard output is empty
https://ideone.com/2YEL3X
language:
Python 3 (python  3.12)
created:
3 days ago
visibility:
public

Share or Embed source code

Discover > Sphere Engine API

The brand new service which powers Ideone!

Discover > IDE Widget

Widget for compiling and running the source code in a web browser!