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  1. N = int(input())
  2.  
  3. rf = 1
  4.  
  5. for i in range(N):
  6.     A, B = map(int, input().split())
  7.  
  8.     if A * B > 0:
  9.         m = abs(A - B)
  10.     else:
  11.         m = abs(A) + abs(B) - 1
  12.  
  13.     if B > A:
  14.         rf += m
  15.     else:
  16.         rf -= m
  17. print(rf)
Success #stdin #stdout 0.09s 14160KB
comments (?)
stdin 
2
1 4
-2 2
stdout 
7
https://ideone.com/LfoRJ8
language:
Python 3 (python  3.12)
created:
2 days ago
visibility:
public

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