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  1. list4 = [4, 44, 444, 4444, 44444]
  2. list7 = [7, 77, 777, 7777, 77777]
  3. list10 = [10, 100, 1000, 10000, 100000]
  4. result = 0
  5. results = [] 
  6.  
  7. x1 = 0
  8. x2 = 0
  9. x3 = 0
  10. x4 = 0
  11. for i in range(100001):
  12.     mod1 = i % 10
  13.     mod2 = i % 100
  14.     b1 = (mod2 >= 44) and (mod2 < 77)
  15.     b2 = (mod1 >= 4) and (mod1 < 7)
  16.     if (b1 and b2):
  17.         result += x4
  18.         x4 += 1
  19.     elif (b1):
  20.         result += x3
  21.         x3 += 1   
  22.     elif (b2):
  23.         result += x2
  24.         x2 += 1
  25.     else:
  26.         result += x1
  27.         x1 += 1
  28.     results.append(result)
  29.  
  30. t = int(input(''))
  31. for i in range(t):
  32.     n = int(input(''))
  33.     print(results[n-1])
  34.  
Success #stdin #stdout 0.26s 5936KB
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https://ideone.com/nRMZJ
language:
Python 3 (python  3.12)
created:
14 years ago
visibility:
public

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