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  1. import math
  2. for _ in range(int(input())):
  3.     v, c = [int(x) for x in input().split()]
  4.     pc = v * int(math.log(abs(c), 2))
  5.     pv = c * int(math.log(abs(v), 5))
  6.     l2 = pow(2, abs(pc), 9) if v > 0 else pow(5, abs(pc), 9)
  7.     l5 = pow(5, abs(pv), 9) if c > 0 else pow(2, abs(pv), 9)
  8.     dr2 = 1 + ((l2 - 1) % 9)
  9.     dr5 = 1 + ((l5 - 1) % 9)
  10.     print(min(int(dr2), int(dr5)))
Success #stdin #stdout 0.01s 27712KB
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https://ideone.com/CeTj5O
language:
Python 3 (python  3.9.5)
created:
5 years ago
visibility:
public

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