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  1. T = int(input()) 
  2. i = 0
  3. result = []
  4. def sum1(D,N):
  5.     sm = 0
  6.     j = 1
  7.     while j <= N :
  8.         sm = sm + j
  9.         j = j + 1
  10.     maxRange = N * D
  11.     D = D - 1
  12.     j = (j - 1) + D
  13.     while j <= maxRange and D != 0:
  14.         sm = sm + j
  15.         j = j + 1   
  16.     return sm
  17.  
  18. while i < T:
  19.     D, N = map(int,input().split())
  20.     result.append(sum1(D,N))
  21.     i = i + 1
  22.  
  23. for i in result[:]:
  24.     print ( i )
  25.  
  26.  
  27.  
Success #stdin #stdout 0.04s 9692KB
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https://ideone.com/pxzSCo
language:
Python 3 nbc (python 3.7.3)
created:
7 years ago
visibility:
public

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