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  1. A = [-1, 2, 3, 5, 6, 8, 9, 10]
  2. key = 7
  3.  
  4. l = 0
  5. r = len(A) - 1
  6.  
  7. while l < r-1:
  8. mid = l + (r-l)//2
  9. print(l, r, mid)
  10. if A[mid] <= key:
  11. l = mid
  12. else:
  13. r = mid
  14.  
  15. print(mid, A[mid])
Success #stdin #stdout 0.03s 9476KB
stdin
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
-1
stdout
0 7 3
3 7 5
3 5 4
4 6