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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. index = 0
  5.  
  6. def equals(x, y):
  7.     for i in range(index, -1, -1):
  8.         mod1 = x % list10[i]
  9.         mod2 = y % list10[i]
  10.         if ((mod1 > list4[i]) and (mod1 <= list7[i])):
  11.             group1 = 2
  12.         else:
  13.             group1 = 1 
  14.         if ((mod2 >= list4[i]) and (mod2 < list7[i])):
  15.             group2 = 1
  16.         else:
  17.             group2 = 2
  18.         if (group1 == group2):
  19.             return False
  20.     return True
  21.  
  22. t = int(input(''))
  23. for i in range(t):
  24.         n = int(input(''))
  25.         result = 0
  26.         index = -1
  27.         for j in range(1, n+1):
  28.              for k in range(j, n+1):
  29.                  if (k == list4[index + 1]):
  30.                      index += 1 
  31.                  if equals(j, k):
  32.                      result += 1
  33.         print(result)
Success #stdin #stdout 0.04s 5868KB
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https://ideone.com/4xu7p
language:
Python 3 (python  3.12)
created:
14 years ago
visibility:
public

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